Need advice!

Ok, so I've recently moved in with my oh and our eight month old son previously I lived with my parents and raised my baby more or less alone. I've discovered I'm now pregnant again I have mixed feelings about this.

Why??

I'll explain. My oh has recently became very hot headed and can have quite a temper and sometimes goes to hurt me but doesn't assuming because I'm pregnant. I don't feel happy or secure I know I want to have a life with him and Enjoy my time with him but he just doesn't make it possible. It's a fight to get him to lift a finger and do something around the house etc there's a lot more but I'll be here all day.