afraid my relationship won't survive this pregnancy

I don't know what changed. A month ago I was the happiest I've ever been. Suddenly I've gotten very depressed and feel so lonely. My Bf has been going out a lot more lately and is all of a sudden using social media. If I ask him about anything, where he went with who, etc.,he gets really defensive and says that I'm trying to keep him in a box. I work nights so I worry all night about him. He's always so short with me lately and sounds so mean when he says stuff. We haven't been intimate in awhile, tho he says he still finds me and my new curves attractive. Last night he was on the couch so I went over to him and tried to cuddle and he said can you get your fucking icebox hands off? I didn't know what to say or do so I just went to the bedroom and cried myself to sleep. He mostly just acts like I'm not here unless he wants me to make him dinner or something. Ive tried to express these feelings to him but I don't think he gets it, he blames hormones. I just don't feel loved anymore.