Pain during sex is common, affecting roughly 10% to 20% of women in the United States at some point. It’s not something you should push through or dismiss as normal. The causes range from temporary and easily fixable (like not enough lubrication) to conditions that need medical attention (like endometriosis or chronic pelvic floor tension). Where you feel the pain, when it starts, and what it feels like all point toward different explanations.
Entry Pain vs. Deep Pain
The single most useful thing you can do is notice where the pain happens, because it splits into two distinct categories that point to very different causes.
Pain at the vaginal opening during initial penetration is called superficial or entry pain. This type is tied to issues affecting the vulva, the vaginal entrance, or the tissues right inside. Common causes include dryness, infections, skin irritation, hormonal changes, or involuntary muscle tightening.
Pain felt deeper inside during thrusting, especially in certain positions, points to something going on further in the pelvis: conditions affecting the uterus, ovaries, bladder, or bowel. Endometriosis, pelvic floor dysfunction, and ovarian cysts are frequent culprits. Deep pain often worsens in positions that allow deeper penetration and may improve when you shift angles.
Not Enough Lubrication
This is the most common and most fixable cause. Without adequate moisture, friction creates a raw, burning sensation at the vaginal entrance. Lubrication can fall short for dozens of reasons: not enough foreplay, stress, certain medications (antihistamines, antidepressants, hormonal birth control), dehydration, or simply the natural variation in your body from one day to the next.
Using a lubricant helps, but not all lubricants are equal. The World Health Organization recommends choosing one with an osmolality below 1,200 mOsm/kg and a pH around 4.5 for vaginal use. In practical terms, that means avoiding products loaded with glycerin or warming agents, which can irritate tissue and actually make things worse. Water-based lubricants with simple ingredient lists tend to be safest. Silicone-based options last longer and rarely cause irritation, though they aren’t compatible with silicone toys.
Infections and Skin Conditions
An active infection can make the vaginal tissues swollen, raw, and painful to the touch, turning penetration from uncomfortable to genuinely painful. The type of discharge you’re experiencing can help narrow down the cause.
- Yeast infections produce thick, white, cottage cheese-like discharge with itching and burning.
- Bacterial vaginosis causes a thin, grayish discharge with a fishy smell and burning.
- Trichomoniasis tends to produce thin, clear-to-greenish discharge, vaginal burning, and sometimes a fishy odor.
- Chlamydia and gonorrhea can cause white, yellow, or green discharge, though many people have no symptoms at all.
- Herpes causes painful sores near the vaginal opening rather than unusual discharge.
The key difference: yeast infections and bacterial vaginosis are not sexually transmitted and often resolve with over-the-counter or short-course treatments. STIs like chlamydia and gonorrhea won’t clear up on their own and need antibiotics. If you’re unsure what’s causing the irritation, getting tested is the fastest route to the right treatment and less painful sex.
Hormonal Changes and Vaginal Tissue Thinning
Estrogen keeps vaginal tissue thick, elastic, and naturally lubricated. When estrogen drops, the tissue thins, loses moisture, and becomes fragile enough to tear during sex. This can cause stinging at the entrance, a feeling of tightness, and sometimes light bleeding afterward.
Menopause is the most well-known trigger, and the effect is widespread: somewhere between 27% and 84% of postmenopausal women experience these changes. But estrogen can also drop during breastfeeding, after surgical removal of the ovaries, during certain cancer treatments, and sometimes while taking hormonal birth control. The vaginal opening can gradually narrow over time as tissue loses elasticity, making penetration increasingly difficult if left unaddressed.
Vaginal moisturizers used regularly (not just during sex) can help maintain tissue hydration. For more significant changes, prescription estrogen applied locally to the vaginal area restores tissue thickness and moisture without the systemic effects of oral hormone therapy.
Pelvic Floor Muscle Tension
Your pelvic floor is a hammock of muscles that stretches across the bottom of your pelvis, supporting your bladder, uterus, and rectum. These muscles need to relax to allow comfortable penetration. When they’re locked in a state of constant tension or spasm, penetration feels like hitting a wall, or produces a sharp, burning pain at the entrance.
This involuntary tightening can develop after a painful experience (a rough exam, a UTI, a difficult delivery), from chronic stress, or sometimes without any obvious trigger. It often creates a frustrating cycle: sex hurts, so your body tenses in anticipation, which makes the next attempt hurt more, which increases the tension further.
Pelvic floor physical therapy is one of the most effective treatments. A specialized therapist works with you to identify which muscles are overactive and teaches you how to consciously release them. About 71% of women report improvement in painful intercourse after completing physical therapy. Treatment typically involves internal and external manual techniques, breathing exercises, and sometimes the use of graduated dilators at home to help the muscles learn to relax around penetration.
Vulvodynia
Vulvodynia is chronic pain at the vulva that has no identifiable cause like an infection or skin condition. It can feel like burning, stinging, rawness, or soreness, and it may be constant or only triggered by touch or pressure. The tissue usually looks completely normal on examination, which is part of what makes it difficult to diagnose.
To identify it, a clinician presses a cotton swab gently against different spots around the vaginal entrance. In women with vulvodynia, this light pressure produces pain, most commonly at the posterior (back) part of the vaginal opening. The diagnosis is essentially one of exclusion: infections, skin diseases, and other identifiable problems are ruled out first.
Vulvodynia is real, it’s not in your head, and it’s treatable. Management usually combines pelvic floor physical therapy with topical treatments to calm the nerve endings in the affected tissue. Some women benefit from oral medications that reduce nerve sensitivity. Treatment takes time, often months, but most women see meaningful improvement.
Endometriosis and Other Deep Causes
If your pain is deep rather than at the entrance, endometriosis is one of the most common explanations. Tissue similar to the uterine lining grows outside the uterus, attaching to pelvic structures. About half of women with endometriosis experience deep pain during sex, and the pain is especially linked to growths (nodules) located behind the cervix, where thrusting can press directly against them. Women with nodules in this area are more than five times as likely to have painful sex compared to those without them.
Other conditions that cause deep pain include ovarian cysts, fibroids, adenomyosis (where uterine lining tissue grows into the muscular wall of the uterus), and inflammatory conditions affecting the bladder or bowel. Pelvic inflammatory disease, usually caused by untreated STIs, can also produce deep pain along with fever and unusual discharge.
Position changes can offer some relief for deep pain. Positions where you control the depth and angle of penetration, like being on top, let you avoid the specific spots that hurt. But position changes are a workaround, not a solution. If you’re consistently experiencing deep pelvic pain during sex, getting evaluated can identify whether something structural is going on.
Psychological and Relationship Factors
Pain during sex is almost never “just psychological,” but your emotional state and nervous system play a genuine role in how your body responds to penetration. Anxiety, past trauma, relationship tension, or a history of painful sex can all prime your nervous system to interpret touch as threatening, tightening muscles and reducing lubrication before you’re consciously aware of it.
This doesn’t mean the pain isn’t real. It means the solution sometimes needs to address both the physical and emotional sides. For some women, working with a therapist who specializes in sexual pain, alongside physical treatment, produces better results than either approach alone. Communicating openly with a partner about what hurts, what feels good, and what positions or types of touch to avoid makes a practical difference while you’re working through treatment.