Relationship advice.

I am really just needing some advice. My boyfriend and I have been together for about a year and a half. In June we lost our son when we were 17 weeks pregnant. We had to go through normal labor and delivery. Ever since, we definately argue more but never anything to big. I guess it just put a lot of stress on the relationship as expected. He will not talk about the baby. He doesn't like to. I guess it bothers him too much. Sunday, he randomly freaked out on me saying we don't get along on anything and said he isn't sexually attracted to me anymore. He said I'm totally different looking than when we got together. Obviously this extremely hurts me. I feel horrible about myself honestly. He is sleeping downstairs for a few days which I think is a good idea but it just sucks because he's treating me totally different. It's like I don't have my best friend anymore. I asked him if he wanted me to move out since everything he's saying since sounds like he wants to break up to me. But he doesn't want me to leave. So I don't understand. I can't be scared everyday because I don't know if I'll be good enough that day or not. Literally a week ago we were talking about moving away together, having another baby and all of that. So I don't understand what changes in a week. Any advice? Does it sound like he's masking things ? Or is he just being a total jerk?