Why does he have to be so mean

I'm basically 7 weeks pregnant as of tomorrow my husband is constantly yelling at me tonight he said I'm just some fat gross bitch that sits on the couch and yells at everyone. Mind you I barely say anything to the kids or anyone for that matter and lately when there is an issue I've been getting my father in law to deal with it since I'm nauseous as hell or my back hurts very bad to stand for more than a couple of minutes. Idk I just feel so unattractive and disgusting and worthless and he's basically saying marrying me was a mistake. I'm just laying here in bed crying because I'm so hurt. I don't ever bring up his gross belly that makes him look 9 months pregnant so for him to say that about me hurts like no other.