Husband yelling

I'm wondering if it's normal that my husband gets so angry with me that he yells, and says hurtful things to me. It will last about an hour or more. He doesn't really say he's sorry, and I feel numb after it all... I hate that my son has to sit through it, he can't help but hear it all, and also I get worked up and cry, and I know the extra cortisol isn't good for my baby while I'm pregnant. My husband is fed up with me, and said he wanted to just end our marriage if I can't listen to him, or stop myself, or do what he's telling me to do, I don't even know what that is... be happy all the time, I guess. He says I take and take, and he can't think of what he even gets in return for our marriage. That I am selfish. He's really stressed trying to financially support us all, but I'm stressed pregnant, and a mother to a 5 year old, and always on the heels of eviction or power out. I'm just wondering, is it normal for spouse to just lose it every so often on me under financial stress, or is it wrong, and i need to actively do something about it? Like I said, I feel numb to it after the yelling, I don't know what's best...I don't know how to keep him from blowing up on me, I'm just looking for advice. Thanks.