12+ Reasons You Might Bleed After Sex & What To Do

Spotting or bleeding after sex can be alarming, but the occasional occurrence is actually pretty common (as many as 9% of women deal with post-coital bleeding [1]). Most causes turn out to be harmless [2], though research suggests you should pay closer attention if the bleeding sticks around, especially past the four-week mark [3]. Whatever's behind it, pinpointing the cause is the key to stopping it from happening again.

Why Are You Bleeding After Sex?

There's no single answer, so let's dig into the possible culprits.

1. Losing Your Virginity

Pop culture loves to portray first-time sex as a bloody ordeal thanks to the hymen (the membrane that surrounds or partly covers the vaginal opening) tearing, so many people brace for pain and blood. It is fairly common to bleed the first time — and even a handful of times afterward — usually from minor vaginal tearing.

But not every woman is born with a hymen, and plenty don't bleed or feel discomfort the first time around. Even that initial bleeding can often be reduced simply by using lube, which we'll cover more below.

Want to know everything about losing your virginity?

2. Dryness

Vaginal dryness can happen when you're not fully turned on, dealing with a hormone imbalance, going through menopause, or taking certain medications. It's not inherently a problem, though — some people naturally run drier than others, while some stay naturally wetter.

3. Vaginal Trauma

Vaginal trauma covers any kind of physical damage to the vagina. It might stem from childbirth, first-time sex, a sports injury, rough sex, resuming sex after a long break, fingering with long nails, or even overly vigorous toy play. Any of these can tear tissue in or around the vagina, causing bleeding during or after sex.

Certain positions bring the cervix closer to the action, which can cause bleeding if a penis or toy strikes it directly. Vaginal trauma also includes tearing inside the canal or near the entrance. In rare cases, stitches may be needed to help things heal properly.

If penetration or even inserting a tampon feels especially difficult, you might be dealing with vaginismus. Vaginismus makes penetration hard or impossible due to involuntary muscle spasms [4]. It doesn't directly cause bleeding, but forcing something inside despite the spasms can lead to injury and blood.

Related: 7 Causes of Painful Sex

Vaginal dilation, lubricant, and addressing any underlying psychological factors can all help ease vaginismus pain and eventually make penetration possible.

4. Pregnancy

Sex is generally considered safe during pregnancy, but bleeding can still occur. Sometimes it's simply breakthrough bleeding around the time your period would normally show up. Implantation bleeding happens when a fertilized egg embeds itself in the uterine wall. Both are normal and can happen whether or not you're having sex.

A third kind of bleeding shows up in some pregnant women because of the extra blood flow to the vagina and cervix during pregnancy. The cervix softens [5], drops lower, and "more blood vessels are developing in this area" during pregnancy [6], which can rupture from contact with a toy, penis, or even a Pap test — particularly in the second or third trimester. As long as bleeding stays light and isn't paired with cramping, it's usually nothing to worry about.

5. Your Period

Ever notice you get extra turned on right around your period? You're far from alone (and it's equally normal if you don't). So you have sex to scratch that itch, then notice some bleeding afterward. It could just be that sex nudged your period into starting a little early. Not a big deal.

6. Cervical or Endometrial Polyps

This isn't the scariest possible cause, but finding blood in your underwear because of it can still be unsettling. A polyp is a small, usually benign growth — essentially an overgrowth of cervical tissue. In fact, if it's not causing any symptoms, it might be perfectly fine to leave a cervical polyp alone entirely [7].

If polyps are behind your bleeding or other symptoms, sex is likely jostling the tissue. A doctor can remove them during a routine physical exam (Pap test).

7. Cervical Cancer

Few words are scarier than "cancer," and yes, bleeding after sex can occasionally be a symptom. That said, as covered above, most causes are harmless and manageable without ever needing to see a doctor. Cervical cancer is a serious matter, but it's a rare explanation for post-coital bleeding [8].

8. Bacterial Infection

Vaginal bacterial infections — bacterial vaginosis (BV) — are common and treatable [9] and can trigger bleeding after sex. A few things that can bring on a bacterial infection include:

• IUDs
• Sex
• Manual stimulation
• Medications
• Sex toys
• Douching
• Antibiotics

And there are more triggers beyond this list. BV also tends to recur [10]. If you've had it once, don't be shocked if it comes back, so using condoms, cleaning toys properly, and washing hands before sex all matter for avoiding repeat infections.

Learn: The causes and treatments for bacterial vaginosis.

9. Sexually Transmitted Infections

An STI could also explain bleeding after sex. One study found that 5.6% of patients who reported post-coital bleeding tested positive for HPV [11]. Gonorrhea can also cause bloody discharge between periods [12], and bleeding tied to anal sex may point to chlamydia [13] [2].

A doctor can test for STIs and offer treatment or guidance. Remember, having a sexually transmitted infection says nothing about your character, even though society sometimes makes it feel that way.

Even condom use can't fully block transmission of every STI. HPV is so widespread that the CDC estimated back in 2014 that roughly 14 million new infections occur every year [14].

10. Cervical Ectropion/Erosion

Sometimes cells simply end up in the wrong place — that's cervical ectropion, where cells that normally line the cervical canal appear on the cervix's surface instead [15]. Sex can trigger bleeding here because these displaced cells bleed more easily than typical cervical tissue [16].

A doctor can spot cervical ectropion during a physical exam just by noticing the overgrowth of glandular cells. The good news: it's not linked to cancer, and several treatment options exist to stop the cells from growing where they shouldn't.

11. Endometriosis

Endometriosis works similarly to cervical ectropion, except it's the uterine lining (the endometrium) that ends up growing in places it shouldn't [17]. This can trigger bleeding between periods, including after sex [18] [19]. Having an IUD alongside endometriosis can compound the post-sex bleeding too [2].

Endometriosis usually comes with pain, so it's an unlikely explanation if you're not experiencing any discomfort.

12. Other Causes?

We obviously can't cover every possible reason behind post-sex bleeding, but here's some quick info on a few more.

• One study found that a partner's genital piercing could cause bleeding [20], and your own piercing could have the same effect.
• Anything that inflames the cervix (cervicitis) could be to blame [1]. Copper IUDs have been shown to contribute to cervicitis [21].
• Pelvic organ prolapse — a rare condition where pelvic organs shift into or through the vaginal walls — is another possibility [1].
• Urogenital atrophy, often paired with vaginal dryness, results from declining estrogen levels [1] and is most common among menopausal women.
• Though uncommon, vascular tumors can also cause bleeding after sex [1]. A doctor might suggest removal to prevent further bleeding or complications.

Related: Everything You Ever Wanted to Know About a Clit Piercing

Bleeding After Sex? Do This

Pause whatever you're doing right away. Continuing despite trauma can make bleeding worse. Since the vagina isn't exactly bandage-friendly, reach for a pad or panty liner to protect your underwear instead. If the injury is external, on the vulva, an antibiotic cream can help ward off infection — just don't apply antibiotic cream inside the vaginal canal unless your OB/GYN specifically tells you to.

Rest until the bleeding subsides, and hold off on sexual activity for a few days to let things heal.

If you're pregnant, call your doctor right away for guidance. Noting the color, texture, and other details of the blood can help them assess things faster.

Preventing Bleeding After Sex in the Future

Once you know what's causing your bleeding, these steps can often help you avoid it going forward — and trying them can also help you figure out the cause in the first place.

• Ease up: Aggressive thrusting with a penis or toy can cause bleeding, as can untrimmed fingernails — make sure any partner keeps theirs short. A rubber glove adds extra protection during fingering.
• Reach for lube: Whether it's your first time or your hundredth, lubricant is a game-changer. It keeps things slick and comfortable and makes rougher sex safer to enjoy. Learn more in our guide to lube.
• Try a softer toy: If rigidity isn't essential, switch to something with more give. Materials like glass or stainless steel can be swapped for silicone, which stays firm without sharp edges.
• Make sure you're properly aroused: Full arousal boosts natural lubrication and helps your vagina expand more comfortably. The upside? This part's fun! Warm up with flirty texts, plenty of foreplay, and some oral attention before penetration. You've probably got a few tricks of your own too!
• Change positions: Another simple fix — pick a position that limits depth or force. Riding on top, for instance, puts you in control. Skip doggy style if it tends to go too deep for comfort. Browse 100+ sex positions for other options.
• Use condoms: One study linked unprotected sex to a higher rate of post-coital bleeding [22], so condoms may help lower that risk, and using condoms is also smart if pregnancy prevention matters to you. Not sure how to use condoms?

When to Talk to Your Doctor About Post-Coital Bleeding

If the bleeding is heavy, frequent, or won't respond to the tips above, it's time to get professional help. Your doctor may perform a Pap smear, examine your cervix, and take swabs. A pregnancy test might be recommended too.

Colposcopy has become an increasingly common next step for evaluating post-coital bleeding, especially when the cervix looks abnormal [23]. It can be uncomfortable since the doctor uses a sharp tool to collect cervical or vaginal cell samples for closer examination [24].

This procedure typically calls for a referral to an OB/GYN if you've been seeing a general practitioner [25]. Results will guide next steps for preventing further bleeding.

Even if the bleeding seems minor, it's always worth mentioning to your doctor.

Occasional bleeding after sex happens and often isn't cause for alarm. That said, heavy or recurring bleeding — especially alongside other symptoms — deserves a conversation with your doctor sooner rather than later.

October 31, 2020