It’s possible, but not likely. If you have anal sex without a condom, semen can drip out of the anus and into the opening of the vagina. But, the risk is low.

The bigger danger is disease. Since the lining of the anus is very thin and can tear easily, it is much easier for a person to be exposed to a sexually transmitted disease during anal sex, if one partner is infected. So, you should ALWAYS use a lubricated latex or polyurethane condom for anal intercourse. Condoms help prevent both pregnancy and disease.