I'm 7.5 months pregnant. And my boyfriend hasn't been interested in sex with me for several months now. We're still having sex maybe 2 or 3 times a month... but, it seems he does it only to get me to shut up. He started taking a new medication and he's saying it's making his sex drive go away... But, I found him looking on craigslist classifieds for people wanting to have sex. Why is this happening? Because of my belly? Is he wanting to cheat on me? I don't understand.