What to do ???

So my boyfriend and I just found out I'm pregnant . He's been very mean and nasty lately .very !!! He just told me he wants to move back to NY by himself . And he doesn't care what happens to me or his baby 😥😥😥. I have 3 small kids and really wanted to keep this one . He's being such a jerk . Oh also , I take care of us financially ( I know huge mistake ) cook , clean, live in my house . He doesn't work .

I know I'll be ok financially , do I just let him go ?? And do I keep this baby I desperately want, knowing I'm going to have to do everything by myself ??????