Single mom of a 5yr old & 7 weeks pregnant

I’m terrified, this baby is not my current child’s father it’s a new relationship.. this man was in the navy and suddenly I’m seeing signs that he’s very hard emotionally, me I am extremely sensitive even without pregnancy . I had two abortions prior to having my first child I am scared about going through with this I really don’t want to abort but I’m sad And I feel alone . My mother died when I was 6 months pregnant and I don’t really have anyone to talk to . Anyone out there been in my shoes ? Or in my shoes?