Feeling pregnant

Dear someone that might be able to help through my thoughts.. I found my husband cheated on me, long story straight we are working on things because I love him he has been cheating since he found out I am pregnant.. but now he recently told me he has to checked out, because at times they didn’t use protection.. embarrassing ashamed of himself I am pretty sure.. but now he is dealing with this his own way and pushed me out goes out drinking and sleeps in car.. I am currently 27 weeks pregnant and we have a 2 year old, so i night I take care of things no matter what.. he tells me he don’t deserve me and he is a scumbag but I told him just be better do better choices but he hasn’t, is he going through stuff..but what about me, I feel like I am saying yes I am fine over here.. the baby is good. But maybe this is hormones but man I just feel so alone and I feel like I might have to have her alone and figure out what to do with my boy while trying to get ready for her by myself. Is it just me or he is being selfish still?