What am I doing wrong..

The guy that I’ve been living with and I just found out we are expecting. At first he was very sweet, very understanding, he was trying to be around as much as possible. But this week he changed. He rude, he says things that just hurt my feelings, no matter what I do even when I do things the way he told me too he still gets mad and goes off. I’m just wondering am I doing something wrong, is this just the hormones.. Someone please help 😢