I've tried it once with my guy. It hurt to much so I made him stop. But I guess you got to be really kinky and into pain to handle it. Lol I am not so good with pain.
@bayleep, have you looked into how to do it so your comfortable? Lube is a definite & taking it slow. It's all up to you and how comfortable you are and make sure he knows that. Personally I am more comfortable laying on my back during it but most people think from behind just cause of porn I think. But just have safe words so he knows if you are okay and take a nice warm bath after to help your area calm down so don't get hemorrhoids.
Being pregnant I would say no cause it is going to be uncomfortable afterwards especially if get hemorrhoids and with your body circulating twice as much blood that is a very sensitive area I think. I am not an expert at all but I have had anal and during pregnancy it's not an option for me.