Changing husband

I honestly don’t know what to do anymore. My husband and I have been together for 6 years, married for 1. We have a 10 month old. We’ve always had a rocky relationship. There were some truly amazing times, and some horrible, horrible times. But I always focused on the good times and I think that’s what got me through the bad times. He cheated so many times but mostly just verbally (to my knowledge). Like me finding messages. I know he cheated physically too but that was in the beginning of our relationship. I check his messages every now and then and haven’t found much except for a few months ago. Bits and pieces of deleted conversation talking about meeting up with escorts in our local city. He swears it’s just for the thrill of talking to them. I see his history on his internet and screenshots of girls from the local escort sites. He’s so distant from me. I swear we are like roommates, barely. He doesn’t pay much attention to our baby and me. He’s either playing video games or sleeping. On a gorgeous days when I want to spend the day with him and our baby and make family memories, he wants to sleep all day. All weekend. He lashes out at me when I ask him what’s wrong and why he’s doing this. This is a normal occurrence. Idk if it’s drugs or what but he said I can drug test him. He just doesn’t care anymore. He knows I’m self conscious about gaining weight since having our baby and today he called me a fat bitch. This is not him. He’s normally a happy, upbeat guy but he gets into these ruts where he just sleeps and if I try to talk to him or ask him to help with our child he freaks out. This happens too often and I can’t take it anymore, mentally or emotionally. We have no intimacy whatsoever. Why would we, I’m “fat” and he has escorts to look at. I’m tired of putting on a brave face everyday. No one in my life has any idea about these issues. I’m too embarrassed. I don’t want to believe it. I’m worried about him but at the same time he’s hurt me so much, he’s a compulsive liar, a manipulator, I can’t trust him. I’m stuck in thinking of our good times together and wanting this to work so badly for our family. I know I have stuff to work on because my anxiety gets the best of me sometimes and I’m not always the nicest to him. But it’s like a vicious circle. He acts like this, I get cold towards him, he gets more distant, I get more bitter. I want to avoid divorce because I don’t want that for our child. I don’t want to be a single mother and have to start over again and have to trust another man to be around my daughter/ watch him be with other women who our daughter will be around. I’m just so lost and exhausted emotionally, mentally and physically. Just looking for any glimpse of hope for things to get better because even though we’ve had a rocky relationship all these years, things were not bad not that long ago, as I said we got married a year ago. It’s been ever since our baby was born, the stress has just spiraled out of control and he had changed to a new degree.