I had unprotected anal sex with my boyfriend. He “accidentally” came inside me a little bit…

…We put toilet paper over my vagina and under his penis as he pulled out. What are my chances of being pregnant? I was also laying on my back, and I later tried to push the semen out. Nothing came out! I’m three days from my expected period. I need reassurance.

Pregnancy is possible whenever semen enters the vagina. If semen accidentally got into the vagina during anal sex, yes, there would be a risk for pregnancy. It’s best to know for sure–take a pregnancy test 14 days after the unprotected sex. (And consider visiting Teen Clinic to start a reliable birth control method soon!)  However, know that semen coming in contact with the anus does not cause pregnancy.

While unprotected anal sex is considered low-risk for pregnancy, it is high-risk for contracting sexually transmitted infections. That’s because the lining of the anus is very fragile and can tear during sexual activity. Small tears (known as anal fissures) may occur during intercourse. Fissures can be fairly painful and slow to heal, and provide a direct route into the bloodstream. Most anal fissures won’t cause permanent damage to the rectum, however.

In the future, Teen Clinic recommends using condoms 100%—this can help set your mind at ease. There are also ways to decrease the risks of discomfort or tearing during anal sex—check out this question to learn more.