However, in most cases it's safe to have anal sex during pregnancy, though you'll need to use Anal sex can aggravate piles, and may cause heavy bleeding. No. You cannot get pregnant from anal sex. For a pregnancy to occur, semen has to be in the vagina, which is near the uterus. The butt is not connected to the. Practicing vaginal sex after anal sex can also lead to vaginal and urinary tract For heterosexual couples, pregnancy can occur if semen is.