He accidentally hit me

Husband and I were sleeping and he was all wrapped up in the comforter. We have a cal king bed and a queen comforter (he refuses to buy one that actually fits). I tugged on the comforter because I wanted some but he didn't budge, so I tried talking to him and asking him for some and nothing. So I tugged harder and he flipped out and started hitting me and the bed. I'm 7 months pregnant. He was only able to smack me a couple times but now I can't sleep. I feel scared that when he moves he is going to hit me. He is angry at me and thinks I'm overacting. Do I have a reason to feel scared? I geniuly can't sleep.