I agree with the other posters and the main issue is his cheating, especially with random men...which puts you at risk (STDS). I also think there's denial on his and your part - he might be bisexual or denying he's gay. He's not just straight IMO. I support the gay community so that's not why I'm mentioning this, but its an important part of your problem. You need to decide, can you live with what he's done and will you tolerate it again? These impulses are very strong. He's tried to give you reasons why he goes with men, instead of saying the truth. For now though concentrate of your baby and best of luck having a healthy birth.