Bleeding After Sex: 12 Possible Causes (& What to Do)

Bleeding after sex, also called postcoital bleeding, means vaginal bleeding that happens during or after sexual intercourse. It can be light spotting or a heavier flow, and it may come from the cervix, vagina, vulva, or uterus.

In many cases, bleeding after sex is linked to benign causes, such as cervical ectropion, cervical polyps, vaginal dryness, infections, or irritation from friction. However, it can also be an early warning sign of sexually transmitted infections, pelvic inflammatory disease, or changes in the cervix, vagina, vulva, or uterus.

Treatment depends on the cause and may involve lubricants, vaginal estrogen, antibiotics, removal of polyps, or procedures to treat abnormal tissue. Medical evaluation is important when bleeding after sex is recurrent, heavy, occurs after menopause, happens with pelvic pain or unusual discharge, or is linked to possible pregnancy or sexual trauma.

What causes bleeding after sex?

The main causes of bleeding after sex are conditions that make the cervix, vagina, vulva, or uterus more fragile, inflamed, irritated, or prone to bleeding.

1. Cervical ectropion

Cervical ectropion happens when delicate cells from inside the cervical canal are present on the outer surface of the cervix. These cells are more fragile and can bleed more easily when touched during sex. It is a common and often benign cause of bleeding after sex.

Some people with cervical ectropion have no other symptoms. Others may notice clear or mucus-like vaginal discharge, spotting between periods, or bleeding after a pelvic exam. Pain is not always present, but bleeding can be bothersome or recurrent.

What to do: Treatment is not always needed if cervical screening is up to date and cancer has been ruled out. If bleeding is frequent or uncomfortable, a doctor may review hormonal birth control, prescribe local treatments, or recommend procedures such as cauterization or cryotherapy. These treatments are usually considered only after more serious causes have been excluded.

2. Cervical polyps

Cervical polyps are small, usually benign growths that form on the cervix. They may contain fragile blood vessels that bleed easily with contact. For this reason, they can cause bleeding after sex or bleeding between periods.

Other symptoms can include heavier menstrual bleeding, irregular spotting, or increased vaginal discharge. Many cervical polyps cause no pain and are found during a pelvic exam. Although most are benign, testing the removed tissue helps rule out rare abnormal or cancerous changes.

What to do: Cervical polyps are usually removed in a simple office procedure. The polyp may be twisted or snipped off, and the tissue is often sent for laboratory testing. Bleeding often improves after removal if the polyp was the cause.

3. Genitourinary syndrome of menopause

Genitourinary syndrome of menopause happens when lower estrogen levels make the vaginal and vulvar tissues thinner, drier, and more fragile. This can make the tissue tear or bleed from friction during sex. It is also known as vulvovaginal atrophy.

Symptoms may include vaginal dryness, burning, itching, soreness, or pain during sex. Urinary symptoms can also occur, such as burning when urinating, urinary frequency, recurrent urinary tract infections, or leakage with coughing or exercise. Bleeding after sex may appear as light spotting from small tears in the vaginal lining.

What to do: Vaginal moisturizers and lubricants can reduce dryness and friction. Low-dose vaginal estrogen, such as creams, tablets, or rings, is often effective when symptoms are due to menopause-related tissue thinning. Broader hormone therapy may be considered when other menopausal symptoms are also present.

4. Cervicitis from STIs

Cervicitis is inflammation of the cervix, and it can be caused by sexually transmitted infections such as chlamydia or gonorrhea. The inflamed cervix becomes more sensitive and may bleed when touched during sex. This is an important cause of bleeding after sex, especially in younger or sexually active people.

Other symptoms may include yellow, pus-like, or foul-smelling discharge. Some cases also cause burning when urinating, pelvic or lower abdominal pain, pain during sex, or bleeding between periods. However, some infections may cause mild symptoms or no obvious symptoms at first.

What to do: Treatment usually involves antibiotics based on testing or the most likely infection. Sexual partners also need evaluation and treatment to prevent reinfection. Sex is usually avoided, or condoms are used, until treatment is completed and symptoms have improved.

5. Pelvic inflammatory disease

Pelvic inflammatory disease, or PID, is an infection of the upper reproductive organs, including the uterus, fallopian tubes, and ovaries. It can happen when infections such as chlamydia or gonorrhea spread upward from the cervix. Bleeding after sex may occur when cervicitis and inflammation inside the uterus are also present.

Symptoms often include pelvic or lower abdominal pain. There may also be abnormal discharge, fever, pain during sex, bleeding between periods, or tenderness during a pelvic exam. PID can become serious if untreated and may increase the risk of infertility, chronic pelvic pain, or ectopic pregnancy.

What to do: PID is treated with broad-spectrum antibiotics that cover common sexually transmitted bacteria and other vaginal organisms. Treatment often lasts at least 14 days, and sexual partners may also need treatment. Hospital treatment with IV antibiotics may be needed for severe illness, pregnancy, or a suspected abscess. Read more about PID medications that your doctor may prescribe.

6. Vaginitis

Vaginitis is inflammation of the vagina, usually caused by infections such as trichomoniasis, bacterial vaginosis, or yeast infection. Inflamed vaginal tissue can become irritated and fragile, which may lead to bleeding after sex. Discharge and irritation are often the main symptoms.

The type of discharge can vary depending on the cause. Trichomoniasis may cause frothy or bad-smelling discharge, yeast infection may cause thick white discharge, and bacterial vaginosis may cause thin discharge with a fishy smell. Itching, burning, pain with sex, and burning when urinating can also happen.

What to do: Treatment depends on the cause of vaginitis. Metronidazole or tinidazole may be used for trichomoniasis or bacterial vaginosis, while antifungal medicines are used for yeast infections. Avoiding irritants and treating partners in trichomoniasis can help prevent symptoms from returning.

7. Vulvovaginal skin conditions

Some long-term skin conditions, such as lichen sclerosus and lichen planus, can affect the vulva and vagina. These conditions can make the skin thin, inflamed, cracked, or easily injured. Bleeding after sex can happen when fragile tissue tears with friction.

Symptoms may include intense itching, burning, soreness, or pain during sex. White patches, erosions, fissures, scarring, or changes in the shape of the vulvar area may also appear. Lichen sclerosus is also linked to a small increased risk of vulvar squamous cell carcinoma.

What to do: High-potency topical corticosteroids are often the first treatment. Long-term follow-up is important because symptoms can return and some skin changes need monitoring. A biopsy may be recommended if there are suspicious lesions, persistent sores, or changes that do not improve.

8. Cervical intraepithelial neoplasia and cervical cancer

Cervical intraepithelial neoplasia, or CIN, means abnormal precancerous changes in the cervix. Cervical cancer can also cause contact bleeding because abnormal cervical tissue may bleed easily. Bleeding after sex is considered an important warning sign that needs medical assessment.

Other symptoms may include bleeding between periods, heavier or irregular periods, bleeding after menopause, or persistent watery or blood-stained discharge. More advanced disease can cause pelvic pain, pain during sex, weight loss, or urinary and bowel symptoms. Early cervical changes may not cause pain.

What to do: Precancerous cervical changes may be treated with procedures such as LEEP, LLETZ, cold knife conization, or ablation, depending on the type and extent of the lesion. Cervical cancer treatment depends on the stage and may involve surgery, radiation therapy, chemotherapy, or a combination of these. Screening with Pap testing and HPV testing helps detect changes before cancer develops.

9. Vaginal intraepithelial neoplasia and vaginal cancer

Vaginal intraepithelial neoplasia, or VAIN, means abnormal precancerous changes in the vaginal lining. Vaginal cancer is rare, but it may cause bleeding after sex or bleeding after menopause. Contact bleeding can happen because abnormal vaginal tissue is fragile and bleeds more easily.

Other symptoms may include watery, blood-stained, or foul-smelling discharge. Pelvic or vaginal pain can occur, especially when disease is more advanced. Urinary or bowel symptoms may also develop if nearby structures are affected.

What to do: VAIN may be managed with close monitoring, local excision, laser treatment, or topical medicines, depending on the grade and extent of disease. Vaginal cancer treatment often involves radiation therapy, sometimes with surgery or chemotherapy. The treatment plan depends on stage, location, and overall health.

10. Vulvar intraepithelial neoplasia and vulvar cancer

Vulvar intraepithelial neoplasia, or VIN, means abnormal precancerous changes in the vulvar skin. Vulvar cancer can also cause bleeding when lesions are rubbed or injured during sex. Bleeding after sex may happen when affected areas are near the vaginal opening.

Common symptoms include long-term vulvar itching, burning, pain, or soreness. There may be visible lumps, ulcers, thickened skin, color changes, or wounds that do not heal. Pain with urination or sex can also occur when the area is irritated.

What to do: VIN may be treated with local excision, laser ablation, or topical medicines. Vulvar cancer treatment usually involves surgery and may also include radiation therapy or chemotherapy. Follow-up is important to monitor healing and check for recurrence.

11. Endometrial polyps, hyperplasia, and endometrial cancer

Endometrial conditions affect the lining of the uterus. They more often cause heavy, irregular, or postmenopausal bleeding, but bleeding after sex can happen in some cases, especially when lesions extend toward the cervix or another cause is also present. These causes are especially important to consider after age 40 or after menopause.

Symptoms may include heavy periods, prolonged periods, bleeding between periods, or bleeding after menopause. Cramping or pelvic discomfort can happen with larger polyps or more advanced disease. Endometrial cancer may begin with abnormal bleeding before other symptoms appear.

What to do: Endometrial polyps are often removed with hysteroscopy. Endometrial hyperplasia may be treated with progestin therapy or hysterectomy, depending on whether atypical cells are present. Endometrial cancer is usually treated with hysterectomy and staging surgery, with radiation therapy or chemotherapy added in some cases.

12. Vaginal or cervical trauma

Trauma can cause bleeding after sex when the vagina or cervix is irritated, scratched, or torn. This may happen from rough intercourse, not enough lubrication, foreign bodies, or a poorly positioned intrauterine device. Bleeding is usually closely linked to the timing of the injury.

Other symptoms may include local pain, burning, soreness, or pain during sex. A pelvic exam may show small cuts, abrasions, or deeper lacerations. If an intrauterine device is out of place, abnormal bleeding patterns or cramping may also occur.

What to do: Treatment depends on the injury and its cause. Lubrication, gentler sexual activity, removal or repositioning of a device, or suturing a deeper tear may be needed. When the pattern of injury raises concern for sexual assault or abuse, medical care should include safety support and appropriate safeguarding.

When to seek medical attention

Bleeding after sex should be assessed by a doctor, especially when it happens more than once or has no clear explanation. Evaluation may include a pelvic exam, cervical screening review, STI testing, pregnancy testing, and sometimes ultrasound, colposcopy, biopsy, or endometrial testing.

Medical care is especially important if bleeding is heavy, occurs after menopause, happens with pelvic pain, fever, unusual discharge, pain during sex, or bleeding between periods. Assessment is also important when there is a new sexual partner, possible STI exposure, pregnancy, or concern about injury or assault.