Advice please! 😢

So I’ve been in a relationship with this man for 2 years, we’ve known each other five years almost 6. Throughout the years we’ve been through a lot of ups and downs mainly downs I’d say. Sometime last May we moved in together or shall I say he moved in with me. The beginning of us living together was ok but as time went on I started to see a different crazy side to him that I wasn’t aware of.. from him putting his hands on me, pushing me, choking me, screaming in my face, threatening me, getting violent with me while kids are around, putting holes in my walls, setting things on fire, breaking things and etc. He says he does it because I get him to that point & I be picking on him. He even goes into a rage if I ask “are you ok?”. Smh about a week ago I just found out I was pregnant and I’m going through so much confusion whether or not I should keep this baby because I don’t want to deal with this man anymore or be tied to him in any shape or form then the other part of me is like I shouldn’t abort an innocent baby 😔. 2 days before Christmas my dog died and he was my world and I’m still having a hard time coping with losing him, I had my chihuahua for 13 years and I’m going through grief while also pregnant. I don’t know if God sent me this blessing for comfort or what but that goes along with my confusion back in fourth in my head. Don’t get me wrong for so long I’ve wanted to be a mother.. in May of last year I also suffered a miscarriage so this will be my rainbow baby. I’m 28 years old and he’s 39 years old with 4 kids already by other women. Today we got into an argument and he threatened to punch me in my stomach and told me I should abort the baby. That sent me over the edge. I don’t know what I should do honestly... and not to mention he’s not even in his other kids life. I don’t know what I was thinking putting up with his bs all these years and finally when I get to my breaking point and want him out of my life for good I end up pregnant. Can you ladies please give me some advice on what to do? 😢 and please don’t judge, none of us are perfect.