He cheated and am a mess

My husband cheated on me(almost due with out 1st). I found out, confronted him and of course the apologies started but he admitted that he wouldn't have told me if I hadn't found out and confronted him. I feel like am the one hurting more from his actions and he is getting off easy, can't stop crying everytime I look at him. I just need to get through these few weeks and have my baby but I am too stressed out and I have no where to go, no other family to go to blow off steam or whatever.
What should I do?!