My boyfriend wants to have anal sex without a condom. Can I get pregnant? – Lauren* Even if your boyfriend thinks he's STD free, he may not be. Lots of. So can you have sex while pregnant? Of course Anal sex, on the other hand, is perfectly fine so long as it's comfortable. Be cautious and. If you enjoy anal sex when not pregnant, you don't have to give it up while pregnant — and the hormonal changes mean it may feel better than.