Contact the UPMC Magee Center for Vulvar and Vaginal Health. To make an appointment or learn more, call 412-641-6412. Our center is located at Magee. While an in-person visit is ideal, we also offer telemedicine visits for your convenience.The vagina is a very “elastic” organ, says Christine O’Connor, MD, director of adolescent gynecology and well women care at Mercy Medical Center in Baltimore.Emily, 25. ‘It feels like a really good stretch. Like when your muscles are tense and you just reach out and feel things open up and release tension. ‘Then fullness. It’s weird to describe ...Jul 24, 2023 · The vagina is a female reproductive organ that changes over the lifespan of a woman. It serves a multitude of functions in response to hormonal changes as appreciated during puberty, menstruation, pregnancy, and menopause. The vagina plays a vital role in the female reproductive system and female sexual pleasure. Vulva, Perineum und Anus einer Frau; durch die geöffneten Labien ist der Scheideneingang sichtbar Vulva (Mehrzahl: Vulven, lateinisch vulvae; auch Pudendum femininum „weibliche Scham“) bezeichnet die Gesamtheit der äußeren primären Geschlechtsorgane weiblicher Säugetiere und besteht aus dem Venushügel, den Schamlippen und der Klitoris.Im …The vagina is a muscular, hollow tube that extends from the vaginal opening to the uterus. Because it has muscular walls, the vagina can expand and contract. This ability to become wider or narrower allows the vagina to accommodate something as slim as a tampon and as wide as a baby.With that in mind, learn more about the most common reasons for pelvic pain or a sore vagina after sex below: Back to top. 1. There wasn’t enough lubrication for sex. One of the most common ...In humans, the male sex organs include the testicles, penis, and prostate gland; the female sex organs include the ovaries, fallopian tubes, uterus, cervix, vagina, and vulva . In animals (including humans), the testicle in the male and the ovary in the female are called the primary sex organs. [1] All other sex-related organs are called ...2 days ago · The vagina is a fibromuscular (made up of fibrous and muscular tissue) canal leading from the outside of the body to the cervix of the uterus. It is also referred to as the birth canal in the context of pregnancy. The vagina accommodates the male penis during sexual intercourse.Vaginal dryness is a painful symptom that affects a person’s quality of life. It can cause pain during sitting, exercising, peeing and sexual intercourse. Normally, your vaginal lining is lubricated with fluid that helps keep it thick and elastic. Vaginal dryness happens when the tissues in your vagina are dry, thin and not well-moisturized.Dec 20, 2023 · Learn about the average depth, appearance, and variations of the vagina, a sex organ and part of the birth canal. Find out how vaginal size and penis length can affect sexual satisfaction and how to keep the vagina healthy.OnlyFans content creator Evelyn Miller was born with two uteruses, two vaginas and two wombs – but didn’t find out until she was 20 years old. Having begun her sex work after a relationship ...Sep 30, 2021 · With that in mind, learn more about the most common reasons for pelvic pain or a sore vagina after sex below: Back to top. 1. There wasn’t enough lubrication for sex. One of the most common ... Nov 1, 2023 · Información. La vagina es un conducto o tubo muscular revestido de membranas mucosas. Su abertura se encuentra entre la uretra (por donde la orina abandona del cuerpo) y el ano. La sangre menstrual abandona el cuerpo a través de la vagina. La vagina también permite la relación sexual y es la vía por la que pasa el bebé al nacer. Feb 8, 2023 · In rare cases, a fishy smell can indicate a more serious condition. 7. Rotten like a decaying organism. A rotten odor that makes your nose wince and your face contort is not the norm. If the smell ... Aug 22, 2022 · Step One: Get in the Shower. Shaving your pubic area should never, ever, be done while skin is dry. "Shaving the pubic area should be the last step in your shower routine as the warm shower water ... Aug 22, 2020 · 5. You have your period. You’ve probably found that your vaginal odor smells a little more intense when you’re bleeding, and that’s normal, Dr. Shepherd says. Blood has an elevated pH, and ... Many misconceptions surround information about the vagina. Here are the facts. 1. The vagina is just one part of a women’s private parts. 2. Kegel exercises strengthen pelvic floor muscles. 3 ...Old engraved illustration of muscles of the woman's perineum. Browse Getty Images' premium collection of high-quality, authentic Vulva stock photos, royalty-free images, and pictures. Vulva stock photos are available in a variety of sizes and formats to fit your needs.Picture of Vagina. The vagina is part of the female reproductive system. It is the canal that is flanked by the vulva and labia on the outside of the body and the cervix of the uterus on the inside. A thin membrane called the hymen covers the opening to the vagina. The tissue may be broken or torn during exercise or sexual activity. The vagina within the female genitals. The dimensions and shape of human vaginas are of great importance in medicine and surgery, in addition to their relevance to sexual pleasure and childbirth; there appears to be no one way, however, to characterize the vagina's size and shape. In addition to variations from individual to individual, the size and shape of a …Your hymen is a small, thin piece of tissue at the opening of your vagina. It's formed by fragments of tissue left over from fetal development. The size, shape and thickness of your hymen are unique to you and can change over time. When you're born, your hymen is usually a ring-shaped piece of tissue that surrounds your vaginal opening. Jul 7, 2023 · A model wearing a “vagina G-string” bikini at the Miami Swim Week 2023 fashion show on July 5, 2023. Photo by Thomas Concordia/Getty Images for DC Miami Swim Week The minimal bikini is from ... Many misconceptions surround information about the vagina. Here are the facts. 1. The vagina is just one part of a women’s private parts. 2. Kegel exercises strengthen pelvic floor muscles. 3 ...Aug 10, 2015 · La ganadora, identificada bajo el seudónimo de Nell, es una mujer escocesa que asegura habérselo tomado con toda la naturalidad posible. “Tomé el concurso como lo que fue, una técnica publicitaria para un juguete sexual”, cuenta la propietaria de la “la vagina más hermosa del mundo”. Aunque su novio siempre decía que tenía una ... Jan 16, 2023 · 15 Raw Birth Photos That Show How Amazing the Vagina Really Is. Parenting. Published Jan 16, 2023. By. Genny Glassman. Leandro Santiago/iStock. A woman's body truly is a miracle, and this fact is most beautifully illustrated during the miracle of childbirth. Ask any witnessing party: What a woman can accomplish through pain, sweat, and tears is ... Jan 18, 2024 · (People often incorrectly use the word vagina to refer to the vulva.) When a man and a woman have sexual intercourse, the man's penis is placed into the woman's vagina. When a woman menstruates (has her menstrual period), blood and other fluid from the uterus pass out from her body through the vagina.The external female genital area is called the vulva.The outer folds of skin are called the labia majora, and the inner folds are called the labia minora.Within the labia minora is the vestibule.. The vagina and uretha open into the vestibule. On either side of the opening of the urethra are the openings to tiny glands called Skene glands.Two additional glands, …Not that long. The authors of one older study, from 2006, found the average length of the vaginal canal was around 2.5 inches (62.7 millimeters [mm]), with a range of 1.5–3.7 inches (40.8–95 ...Every vagina has its own unique scent, which is a combination of the normal bacteria that reside in your vagina, your diet, if you wear natural fabrics or synthetics, your level of hygiene, your ...The correct language and understanding of female genitalia is so important to me: the vulva is the whole external package, the vagina is a muscular tube which leads from the cervix (the neck of ...Discharge from your vagina is a natural and normal process, but changes to your discharge can be a sign of infection or disease. Women or people assigned female at birth (AFAB) have varying amounts of vaginal discharge. Some people produce more discharge than others, while others notice very little.Jul 26, 2022 · Vaginal dryness is a painful symptom that affects a person’s quality of life. It can cause pain during sitting, exercising, peeing and sexual intercourse. Normally, your vaginal lining is lubricated with fluid that helps keep it thick and elastic. Vaginal dryness happens when the tissues in your vagina are dry, thin and not well-moisturized. Picture of Vagina. The vagina is part of the female reproductive system. It is the canal that is flanked by the vulva and labia on the outside of the body and the cervix of the uterus on the inside. A thin membrane called the hymen covers the opening to the vagina. The tissue may be broken or torn during exercise or sexual activity. Picture of Vagina. The vagina is part of the female reproductive system. It is the canal that is flanked by the vulva and labia on the outside of the body and the cervix of the uterus on the inside. A thin membrane called the hymen covers the opening to the vagina. The tissue may be broken or torn during exercise or sexual activity. The vagina is the tube leading from the to the outside of the body. The opening is between the legs, inside the , behind the opening to the , and in front of the. The vagina is an . It starts at the cervix and ends at the [2] It is about 6 to 7.5 centimetres (2.4 to 3.0 in) wide, and 9 centimetres (3.5 in) long. Ez a szócikk a női nemi szervről szól. Egyéb jelentései a hüvely (egyértelműsítő lap) szócikkben találhatók.. A hüvely (latinul vagina, melynek eredeti jelentése kardhüvely) egy cső alakú járat, mely a méhből a női méhlepényeseknél és az erszényeseknél a testen kívülre, a madaraknál, a kloákásoknál és egyes hüllőknél a kloákához vezet.Discharge from your vagina is a natural and normal process, but changes to your discharge can be a sign of infection or disease. Women or people assigned female at birth (AFAB) have varying amounts of vaginal discharge. Some people produce more discharge than others, while others notice very little.Past infections of the vagina. Painful swelling called inflammation that affects the vulva. Some genetic conditions. Allergies. Hormonal changes. Muscle spasm or weakness in the pelvic floor, which supports the uterus, bladder and bowel. Complications. Without treatment, vulvodynia can affect mental health, relationships and other aspects of ...Aug 22, 2022 · Step One: Get in the Shower. Shaving your pubic area should never, ever, be done while skin is dry. "Shaving the pubic area should be the last step in your shower routine as the warm shower water ... Past infections of the vagina. Painful swelling called inflammation that affects the vulva. Some genetic conditions. Allergies. Hormonal changes. Muscle spasm or weakness in the pelvic floor, which supports the uterus, bladder and bowel. Complications. Without treatment, vulvodynia can affect mental health, relationships and other aspects of ...The vagina is one of the most important and versatile structures in the female reproductive system. We’ll go over the different parts of the vagina and how they function before going over the ... With that in mind, learn more about the most common reasons for pelvic pain or a sore vagina after sex below: Back to top. 1. There wasn’t enough lubrication for sex. One of the most common ...The vagina is the bit inside. But even among those who are clued-up on the anatomy, there’s still a lot of vulva hatred going on. Almost a third (29%) of people aged 16 to 35 have worried about ...Dec 6, 2022 · The vagina is where the lining of the uterus is shed during menstruation, where penetration can occur during sex and where a baby descends during childbirth. The vagina is a closed muscular canal that extends from the outside of the female genital area (vulva) to the neck of the uterus (cervix).Gray vaginal discharge is unhealthy and can be a symptom of a common bacterial infection called bacterial vaginosis (BV). BV usually causes other vaginal symptoms as well, including: itching ...Apr 16, 2023 · You are free: to share – to copy, distribute and transmit the work; to remix – to adapt the work; Under the following conditions: attribution – You must give appropriate credit, provide a link to the license, and indicate if changes were made. You may do so in any reasonable manner, but not in any way that suggests the licensor endorses you or …Aug 22, 2022 · Step One: Get in the Shower. Shaving your pubic area should never, ever, be done while skin is dry. "Shaving the pubic area should be the last step in your shower routine as the warm shower water ... 6. Your vagina cleans itself. Step away from the soap and harsh cleansers, friends, because your vagina keeps itself clean all on its own. "The vagina is lined by a variety of glands that produce ...Emily, 25. ‘It feels like a really good stretch. Like when your muscles are tense and you just reach out and feel things open up and release tension. ‘Then fullness. It’s weird to describe ...Vaginal support structures. The vaginal support structures are those muscles, bones, ligaments, tendons, membranes and fascia, of the pelvic floor that maintain the position of the vagina within the pelvic cavity and allow the normal functioning of the vagina and other reproductive structures in the female. Defects or injuries to these support ...In humans, the male sex organs include the testicles, penis, and prostate gland; the female sex organs include the ovaries, fallopian tubes, uterus, cervix, vagina, and vulva . In animals (including humans), the testicle in the male and the ovary in the female are called the primary sex organs. [1] All other sex-related organs are called ...6. Your vagina cleans itself. Step away from the soap and harsh cleansers, friends, because your vagina keeps itself clean all on its own. "The vagina is lined by a variety of glands that produce ...sex toy cleaner. type of condom (or other barrier methods) sexual partners. 4. Stay hydrated. Drinking plenty of water is good for more than just your skin. It can help your vagina’s overall ...The hymen is a thin membrane that partially covers the entrance to the vagina. It sometimes can be torn or stretched during a woman’s first experience with sex (usually through sexual intercourse) or because of tampon use or medical procedures. The presence or absence of a hymen does not indicate “virginity.”. A vaginal fistula is an unusual opening that develops between the vagina and another organ, such as the bladder, colon or rectum. Your health care provider might describe a vaginal fistula as a hole in the vagina that allows urine, gas or stool to pass through the vagina. Vaginal fistulas can develop after childbirth, an injury, a surgery, an ...Sep 15, 2016 · A brief history of the vagina in art (slide show) Thomas Ruff, Red Panties, from the "Nudes" series, 2001. Vajayjay, vaj, meat wallet, muff monster, bearded clam, furback turtle—whatever you ... The vulva includes the mons pubis. This is the rounded area in front of the pubic bones at the lower part of the belly (abdomen). It becomes covered with hair at puberty. The vulva has two folds of skin or "lips." The outer folds are called the labia majora. The inner folds are called the labia minora.Jul 3, 2023 · The left labia majora is 79.99 mm (just over 3.1 in) long. The right labia minora is 42.1 mm (about 1.6 in) long and 13.4 mm (about 0.5 in) wide. The left labia minora is 42.97 mm (about 1.7 in ... cervix, lowest region of the uterus; it attaches the uterus to the vagina and provides a passage between the vaginal cavity and the uterine cavity. The cervix, only about 4 centimetres (1.6 inches) long, projects about 2 centimetres into the upper vaginal cavity. The cervical opening into the vagina is called the external os; the cavity running the length of …May 15, 2023 · Not that long. The authors of one older study, from 2006, found the average length of the vaginal canal was around 2.5 inches (62.7 millimeters [mm]), with a range of 1.5–3.7 inches (40.8–95 ... The vagina within the female genitals. The dimensions and shape of human vaginas are of great importance in medicine and surgery, in addition to their relevance to sexual pleasure and childbirth; there appears to be no one way, however, to characterize the vagina's size and shape. In addition to variations from individual to individual, the size and shape of a …Female anatomy 101. First, a quick refresher on anatomy. People often use the term “vagina” to describe female genitalia. But the vagina is what’s on the inside. It’s a stretchy tube that ...Apr 17, 2017 · Try this: If you must shave or landscape your pubic hair, try to use natural shaving gels and creams. Sliquid has a great line of hypoallergenic and vegan shaving creams that are fantastic for ... sex toy cleaner. type of condom (or other barrier methods) sexual partners. 4. Stay hydrated. Drinking plenty of water is good for more than just your skin. It can help your vagina’s overall ...Aug 2, 2019 · Penis captivus refers to the penis becoming stuck in the vagina. There are so few documented cases that many people believe it to be a myth. We describe how it can happen and what to do if it does. So let’s get that cleared up from the start: the vulva is the external genitals, including your labia, clitoris and vaginal opening. The vagina is the bit inside. But even among those who are ...Vaginal rugae. Vaginal rugae are structures of the vagina that are transverse ridges formed out of the supporting tissues and vaginal epithelium in females. [1] Some conditions can cause the disappearance of vaginal rugae and are usually associated with childbirth and prolapse of pelvic structures. The rugae contribute to the resiliency and ...AboutTranscript. This video explores the journey of sperm from the male reproductive system to the female reproductive system. It details the two-step process of erection and ejaculation, explaining the role of the brain and blood vessels in achieving an erection. The video also delves into the anatomy of the penis and the process of ejaculation. 7. Terasa Hangat saat Terangsang. Fakta vulva terakhir adalah, akan terasa hangat ketika terkena rangsangan seksual. Hal tersebut terjadi ketika terjadi sentuhan pada klitoris, karena darah akan mengalir deras ke area bibir vagina, sehingga labia minora terlihat sedikit membengkak dan terasa hangat.The correct language and understanding of female genitalia is so important to me: the vulva is the whole external package, the vagina is a muscular tube which leads from the cervix (the neck of ...Sep 30, 2019 · The vagina is a mucous membrane, which means that the skin and tissue of a healthy vagina are always moist. Hormonal changes, arousal, and other factors can affect the wetness of the vagina. The mons pubis is the area of skin and fat above the other structures. It protects the other structures below it. The labia majora are thick areas of skin and fat located to the side of the urinary and vaginal openings. Smaller and thinner labia are the labia minora. These structures are connected to the hood of the . They are close to the vagina.Nov 1, 2023 · Información. La vagina es un conducto o tubo muscular revestido de membranas mucosas. Su abertura se encuentra entre la uretra (por donde la orina abandona del cuerpo) y el ano. La sangre menstrual abandona el cuerpo a través de la vagina. La vagina también permite la relación sexual y es la vía por la que pasa el bebé al nacer. Learn about the vagina, a muscular canal that connects your uterus to your vulva and plays a role in sexual pleasure, menstruation, pregnancy and childbirth. Find out how to keep your vagina healthy and infection-free, and what factors affect its size, depth and appearance.But vaginitis symptoms usually include: Your vagina and/or vulva is discolored, irritated, swollen, or uncomfortable. Itching, burning, and pain in your vulva or vagina. Pain or discomfort during sex. Feeling like you have to pee more often than usual. Peeing may sting if your vulva is really irritated. Vaginal discharge that isn’t normal for ...The correct language and understanding of female genitalia is so important to me: the vulva is the whole external package, the vagina is a muscular tube which leads from the cervix (the neck of ...When people refer to an innie or outie vagina, they are typically referring to the labia majora and labia minora. Some people may also refer to these parts of the vulva as the “lips.”. The ...Dec 24, 2023 · The vagina is a canal in female mammals that receives the male reproductive cells, or sperm, and is part of the birth canal during the birth process. It also functions as an excretory canal for the products of menstruation. Learn more about its anatomy, functions, diseases, and history from Britannica.The vagina is the internal portion of the female genitals. The vulva refers to the external portion, which includes structures such as the clitoris, the labia majora and labia minora, and the ...Jun 10, 2019 · The vagina is a 3- to 6-inch-long muscular canal that runs from the cervix, the lower part of the uterus, to the outside of the body.The vulva is all the outer stuff — including the labia ... Symptoms can include: a feeling of fullness in the vagina. a lump at the opening of the vagina. a sensation of heaviness or pressure in the pelvis. a feeling like you’re “sitting on a ball ...Vaginal dryness is a painful symptom that affects a person’s quality of life. It can cause pain during sitting, exercising, peeing and sexual intercourse. Normally, your vaginal lining is lubricated with fluid that helps keep it thick and elastic. Vaginal dryness happens when the tissues in your vagina are dry, thin and not well-moisturized.Aug 22, 2020 · 5. You have your period. You’ve probably found that your vaginal odor smells a little more intense when you’re bleeding, and that’s normal, Dr. Shepherd says. Blood has an elevated pH, and ...
Not that long. The authors of one older study, from 2006, found the average length of the vaginal canal was around 2.5 inches (62.7 millimeters [mm]), with a range of 1.5–3.7 inches (40.8–95 .... Nude 1920
With that in mind, learn more about the most common reasons for pelvic pain or a sore vagina after sex below: Back to top. 1. There wasn’t enough lubrication for sex. One of the most common ...OnlyFans content creator Evelyn Miller was born with two uteruses, two vaginas and two wombs – but didn’t find out until she was 20 years old. Having begun her sex work after a relationship ...Or, perhaps size is unrelated to female sexual enjoyment. The famous sex researchers Masters and Johnson [ 1, 2] have concluded that size of the male penis can have no true physiological effect on female sexual satisfaction. They base this conclusion on their physiological studies that show that the vagina adapts to fit the size of the penis.Female anatomy 101. First, a quick refresher on anatomy. People often use the term “vagina” to describe female genitalia. But the vagina is what’s on the inside. It’s a stretchy tube that ...Try this: If you must shave or landscape your pubic hair, try to use natural shaving gels and creams. Sliquid has a great line of hypoallergenic and vegan shaving creams that are fantastic for ...vaginal itching and burning. vaginal soreness and discomfort. inflamed, flushed, or swollen skin around your vagina and vulva. a change in the amount of vaginal discharge. a change in the color of ...Vaginal lubrication is a naturally produced fluid that lubricates the vagina. Vaginal lubrication is always present, but production increases significantly near ovulation and during sexual arousal in anticipation of sexual intercourse. Vaginal dryness is the condition in which this lubrication is insufficient, and sometimes artificial ...Picture of Vagina. The vagina is part of the female reproductive system. It is the canal that is flanked by the vulva and labia on the outside of the body and the cervix of the uterus on the inside. A thin membrane called the hymen covers the opening to the vagina. The tissue may be broken or torn during exercise or sexual activity. Ez a szócikk a női nemi szervről szól. Egyéb jelentései a hüvely (egyértelműsítő lap) szócikkben találhatók.. A hüvely (latinul vagina, melynek eredeti jelentése kardhüvely) egy cső alakú járat, mely a méhből a női méhlepényeseknél és az erszényeseknél a testen kívülre, a madaraknál, a kloákásoknál és egyes hüllőknél a kloákához vezet.Jun 29, 2017 · The first episode of series two, which was on at 10pm on Thursday, featured 363 vagina shots and 166 penises - amounting to seven every minute. Channel 4 said Naked Attraction last year drew an ... You are free: to share – to copy, distribute and transmit the work; to remix – to adapt the work; Under the following conditions: attribution – You must give appropriate credit, provide a link to the license, and indicate if changes were made. Jul 7, 2023 · A model wearing a “vagina G-string” bikini at the Miami Swim Week 2023 fashion show on July 5, 2023. Photo by Thomas Concordia/Getty Images for DC Miami Swim Week The minimal bikini is from ... The vulva includes the mons pubis. This is the rounded area in front of the pubic bones at the lower part of the belly (abdomen). It becomes covered with hair at puberty. The vulva has two folds of skin or "lips." The outer folds are called the labia majora. The inner folds are called the labia minora..
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Verporno espanol | Vaginal rugae. Vaginal rugae are structures of the vagina that are transverse ridges formed out of the supporting tissues and vaginal epithelium in females. [1] Some conditions can cause the disappearance of vaginal rugae and are usually associated with childbirth and prolapse of pelvic structures. The rugae contribute to the resiliency and ......
Hd altyazili pornosu | Symptoms can include: a feeling of fullness in the vagina. a lump at the opening of the vagina. a sensation of heaviness or pressure in the pelvis. a feeling like you’re “sitting on a ball ...Women with the tulip shape have a labia minora which is slightly visible between the labia majora. It is a more tucked-in version of curtain shaped vagina. Horseshoe vagina: People with Horseshoe ......
Porna turkce alt yazili | Feb 20, 2016 · Every vagina has its own unique scent, which is a combination of the normal bacteria that reside in your vagina, your diet, if you wear natural fabrics or synthetics, your level of hygiene, your ... The vagina is a mucous membrane, which means that the skin and tissue of a healthy vagina are always moist. Hormonal changes, arousal, and other factors can affect the wetness of the vagina....
Sks ba zn dadash | Discharge from your vagina is a natural and normal process, but changes to your discharge can be a sign of infection or disease. Women or people assigned female at birth (AFAB) have varying amounts of vaginal discharge. Some people produce more discharge than others, while others notice very little.Jul 3, 2023 · The left labia majora is 79.99 mm (just over 3.1 in) long. The right labia minora is 42.1 mm (about 1.6 in) long and 13.4 mm (about 0.5 in) wide. The left labia minora is 42.97 mm (about 1.7 in ... With that in mind, learn more about the most common reasons for pelvic pain or a sore vagina after sex below: Back to top. 1. There wasn’t enough lubrication for sex. One of the most common ......
Phim sex viet | With that in mind, learn more about the most common reasons for pelvic pain or a sore vagina after sex below: Back to top. 1. There wasn’t enough lubrication for sex. One of the most common ...clitoris, female erogenous organ capable of erection under sexual stimulation. A female homologue of the male penis, the clitoris develops (as does the penis) from the genital tubercle of the fetus, and it plays an important role in female sexual response. The body of the clitoris is suspended from the pubic bone by a short ligament and emerges ......
Real life porno 19 special part 2 ria sunn | Sep 14, 2018 · With a vibrator on the external glans clitoris (the part you can see!), massage in the same consistent motion you use with your tongue. You can use your mouth as well! Try penetration with the ... The O-spot, sometimes called the C-spot, is located near and on the cervix, deep inside the vaginal canal. (FTR, the depth of your vagina will vary from person to person, but one recent study did ......