Do you have family you could go stay with for a while. Preferably a father, or biker uncle with loads of guns? This doesn't sound safe for you and your current children. As far as the abortion that's for you to decide,but I can clearly see why you're thinking about it. Just know the longer term,the more expensive. There is a time limit on when they can perform the procedure legally. I'd get a temporary protection order on this guy asap.