Husband troubles

My husband and I have been married for about a year but he's become so mean. He yells at me a lot and tells me things like I'm stupid and ridiculous and its starting to really hurt my feelings. I thought he would be nicer to me now since I'm pregnant but it's only getting worse. I don't even want to look at him half the time. I'm tired of fighting and my marriage is starting to make me feel exhausted. I left a lot of relationships in the past because I constantly felt bullied and I thought that he was the one man that would always treat me right. What should I do? I feel so lost.