Need Advice

I'm 29 weeks & 2 days the father of my unborn child have left me multiple times & I came back for the sake of our son but he left again for the last time he tells me hurtful things like he don't love me & I should move on the thing is I would move on if he would stay away I just don't want things to affect my son's life I stress alot when I shouldn't have to I been going thru my pregnancy alone what should I do if he tries to come back I'm emotionally drained from this