A vaginal ache can come from dozens of different sources, ranging from tight pelvic muscles and hormonal shifts to infections and chronic pain conditions. Chronic pelvic pain affects roughly 15% of women in the United States, so this is far from rare. The type of ache you feel, where exactly you feel it, and what triggers it are the best clues to what’s going on.
Tight Pelvic Floor Muscles
One of the most overlooked causes of vaginal aching is pelvic floor dysfunction. Your pelvic floor is a hammock of muscles stretching from your pubic bone to your tailbone, supporting your bladder, uterus, and rectum. When these muscles go into a state of constant contraction or spasm, the result is a dull, persistent ache that can feel like it’s coming from inside the vagina itself.
This condition, called a hypertonic pelvic floor, can cause pain that’s constant or that flares with certain activities: sitting for long periods, exercising, having sex, or even using a tampon. It often comes with other symptoms you might not connect to muscle tension, like difficulty fully emptying your bladder, constipation, or a feeling of pressure in your pelvis. Stress, past injuries, and even habitual muscle clenching can all contribute. Pelvic floor physical therapy, where a specialist works with you to retrain these muscles to relax, is one of the most effective treatments.
Infections That Cause Deep Aching
Pelvic inflammatory disease (PID) is one of the more serious infections that produces a vaginal or pelvic ache. It happens when bacteria travel from the vagina through the cervix and into the uterus, fallopian tubes, or ovaries. The two most common culprits are gonorrhea and chlamydia, though other bacteria can cause it too.
PID pain typically feels tender and sore, like a dull ache in your lower abdomen or deep in the pelvis. It often comes with irregular vaginal discharge and pain during sex. Left untreated, PID can cause scarring that leads to fertility problems, so getting it diagnosed and treated early matters. If you have a new or worsening pelvic ache alongside fever, unusual discharge, or pain during intercourse, those symptoms together are a reason to see a provider promptly.
Less severe infections, like yeast infections or bacterial vaginosis, tend to cause more burning and itching than a deep ache, but they can still contribute to general vaginal discomfort, especially if they recur frequently.
Vulvodynia: Chronic Vulvar Pain
Vulvodynia is persistent pain in the vulvar area (the tissue around the vaginal opening) that lasts at least three months and has no identifiable cause like an infection or skin condition. The pain is often described as burning, stinging, or a raw ache. Some people feel it constantly, while others notice it only with pressure from sitting, wearing tight clothes, or during sex.
A subset called vulvar vestibulitis causes well-defined pain right at the vaginal entrance. It can feel like a dull ache, burning, or irritation, and it tends to respond poorly to standard treatments like antifungal creams, which is part of what makes it frustrating. Vulvodynia is a real, recognized medical condition, not “in your head,” and treatment typically involves a combination of topical medications, pelvic floor therapy, and sometimes nerve-targeted approaches.
Hormonal Changes and Vaginal Atrophy
When estrogen levels drop, the vaginal lining thins out. Healthy vaginal tissue is naturally moist and several layers thick. With less estrogen, it becomes drier, less elastic, and more fragile. This is most common during and after menopause, but it also happens during breastfeeding, after certain cancer treatments, or with some hormonal medications.
The medical term for this is genitourinary syndrome of menopause, and it causes dryness, burning, itching, and an aching or sore feeling, especially during or after sex. Because the tissue is thinner, everyday friction from clothing or activity can also irritate it. Topical estrogen treatments and vaginal moisturizers are the most common ways to manage it, and they tend to work well for most people.
Endometriosis
Endometriosis causes tissue similar to the uterine lining to grow in places it shouldn’t, like on the ovaries, fallopian tubes, or the tissue behind the cervix. The pain it produces often follows the menstrual cycle, getting worse around your period, and it can feel like something deep inside is being “bumped into,” particularly during sex.
Research shows that deep pain during intercourse in people with endometriosis is strongly linked to nodules in the retrocervical area, the space just behind the cervix. Women with these nodules are about five times more likely to experience deep pain during sex. Endometriosis pain also commonly includes heavy periods, pain with bowel movements, and chronic lower back or pelvic aching that extends beyond menstruation.
Vaginismus and Muscle Spasms
Vaginismus is an involuntary tightening of the muscles around the vaginal opening. It’s not something you can control, and it can make penetration of any kind, whether during sex, a medical exam, or tampon insertion, painful or impossible. The aching often comes after an attempt at penetration, when the muscles have been clenching hard against resistance.
This condition frequently has both physical and psychological components. Past painful experiences, anxiety about penetration, or even repeated infections can train the body to clamp down protectively. The good news is that working with a pelvic floor specialist or sex therapist leads to improvement for most people, often through a gradual process of desensitization using dilators alongside relaxation techniques.
Pregnancy-Related Vaginal Aching
During the third trimester, many people experience sudden sharp or stabbing pains in the vaginal area, sometimes called “lightning crotch.” This happens when the baby’s weight presses on the cervix or the nerves surrounding it. As the baby gets heavier and drops lower into the pelvis in preparation for birth, these pains become more frequent.
Any fetal movement, whether rolling, stretching, or kicking, can trigger it if the baby is in the right position. Lightning crotch is typically brief and not a sign of labor or a problem with the pregnancy. A more persistent, heavy ache or pressure in the vaginal area during pregnancy can also come from the increased weight on the pelvic floor, varicose veins in the vulvar area, or pelvic girdle pain from loosening ligaments. Gentle pelvic floor exercises and supportive garments can help ease the pressure.
Bladder-Related Causes
Because the bladder sits directly in front of the vagina, bladder problems can easily feel like vaginal pain. A urinary tract infection or bladder infection (cystitis) causes pressure and aching in the lower pelvis along with frequent urination and urgency. Interstitial cystitis, a chronic bladder condition, produces similar symptoms but without an active infection, and the aching can persist for months or years.
The key distinction is that bladder-related aching tends to come with urinary symptoms: needing to pee constantly, waking up at night to urinate, or a burning pressure just above the pubic bone. If your vaginal ache worsens as your bladder fills and eases somewhat after you urinate, the bladder is worth investigating as the source.
Sorting Out the Cause
Because so many conditions overlap in this area, pay attention to a few specifics that help narrow things down. Pain right at the vaginal opening that flares with touch or pressure points toward vulvodynia or vaginismus. A deep ache that worsens during sex or around your period suggests endometriosis or pelvic congestion. Pain with unusual discharge or fever raises the likelihood of an infection like PID. Dryness and irritation in someone who is postmenopausal, breastfeeding, or on certain medications fits hormonal changes.
A persistent vaginal ache that doesn’t resolve on its own within a couple of weeks, or one that comes with fever, abnormal discharge, or bleeding, is worth bringing to a healthcare provider. Many of these conditions respond well to treatment once properly identified, but the overlap in symptoms means self-diagnosis is unreliable. A provider can distinguish between muscular, hormonal, infectious, and structural causes through a focused exam and, when needed, targeted testing.