I don't want to come off as harsh, but if I do, then so be it.  Blue Rose asks some insightful questions, and I can only reiterate them.

What are you thinking?  I mean, what on earth are you thinking?  That a batterer will suddenly CHANGE?  That the change will somehow magically become permanent?  NO, no, and.............no.

I have been where you are, and I have offered you the best suggestions that I could.  Blue Rose has offered you excellent suggestions and resources.  And, you are choosing to remain with someone who might possibly kill you, but not before he kills your son in front of you to increase your pain and suffering for having the NERVE to even pretend that you're going to leave.

Do you honestly think that there is "love" involved in his ownership of you?  That you are SO valued that he can't let you go?  NO...he doesn't "love" anything - he covets just like a 2 year old wants an ice cream.  He wants you to USE you like toilette paper, and then he will dispose of you (AND, your precious child) just like used toilette paper.  You are only valuable to him as a source of control.  That's it, and that's all.  You are not even viewed as a human being.  He would kick you in the teeth before he would kick a dog, and that's the way of an abuser.  He doesn't "love" you by any stretch of the imagination.  He OWNS you.  You are less than a slave to him because he didn't have to purchase you at a slave auction. 

Call the hotline.  Call an attorney.  Get out, for God's sake, before you and your precious baby are just another statistic for the Domestic Violence Survey.