Bleeding After Sex (Postcoital Bleeding): Symptoms, Causes & UK Online Doctor Guide

Postcoital bleeding, often referred to by clinicians as PCB, is the occurrence of vaginal bleeding after sexual intercourse. For many women in the UK, this can be an alarming experience, but it is a relatively common symptom that often has a treatable, non-cancerous cause. It is defined as bleeding that is unrelated to your regular menstrual cycle.

According to NHS and NICE guidance, while most cases are caused by benign changes in the cervix or vagina, any unscheduled bleeding should be assessed by a healthcare professional to ensure that serious conditions, such as cervical or vaginal cancer, are ruled out. In the UK, around 1 in 10 women may experience postcoital bleeding at some point in their lives, particularly during their reproductive years.

Cervical Ectropion

The most frequent cause of postcoital bleeding in younger women and those taking the combined oral contraceptive pill is cervical ectropion (sometimes called cervical erosion). This occurs when the cells from the inside of the cervical canal grow on the outside of the cervix. these cells are more delicate and prone to bleeding when touched during intercourse.

Vaginal Dryness and Atrophy

Women going through the menopause or those who are breastfeeding may experience vaginal atrophy. This is where the vaginal walls become thinner, drier, and more inflamed due to a lack of oestrogen, making them more likely to tear or bleed during sex.

Sexually Transmitted Infections (STIs)

Infections such as Chlamydia or Gonorrhoea can cause inflammation of the cervix (cervicitis). This inflammation makes the tissue extremely sensitive, leading to spotting or light bleeding after contact.

Cervical Polyps

These are small, benign growths on the lining of the cervical canal. Because they are highly vascular (full of blood vessels), they can bleed easily when brushed during sex.

If you have experienced bleeding after sex, you should arrange to speak to a GP. While it may only happen once, a professional consultation is necessary to determine if further investigations are required. You might choose to speak to a UK online doctor if you need an initial triage, advice on STI testing, or a private referral for a physical examination.

An online consultation can be a helpful first step to discuss your medical history, any associated pain, and your most recent cervical screening (smear test) results. A GP will ask about your contraceptive use and whether you have other symptoms like unusual discharge or pelvic pain. However, it is important to note that most cases of PCB will eventually require a physical speculum examination, which an online GP can help facilitate through a referral or by advising you on the next steps at an NHS clinic.

Following a consultation, a GP will typically follow the NICE (National Institute for Health and Care Excellence) pathway for unscheduled bleeding. This usually involves:

• Speculum Examination: To look at the health of the cervix and check for visible polyps or signs of ectropion.
• STI Screening: A simple swab test for Chlamydia and Gonorrhoea, even if you do not have other symptoms.
• Cervical Screening: Checking that your smear tests are up to date. If they are overdue, this is a priority.
• Colposcopy Referral: If the GP sees something unusual or if the bleeding is persistent despite normal initial swabs, they may refer you to a specialist (gynaecologist) for a colposcopy to look at the cervix in more detail using a magnifying lens.

Treatment depends entirely on the underlying cause identified during your assessment:

• Infections: If an STI is found, a course of antibiotics will usually clear the infection and stop the bleeding.
• Ectropion: If the bleeding is troublesome, the delicate cells can be removed using a minor procedure called cautery (silver nitrate or cold coagulation).
• Atrophy: Vaginal dryness is often treated effectively with topical oestrogen creams, pessaries, or lubricants.
• Polyps: Cervical polyps can often be removed during a simple outpatient appointment.

If the cause is related to hormonal contraception, your doctor may suggest switching to a different pill or method of birth control to see if the symptoms resolve.