Domestic abuse?

My off and on again bf and father of my now 2 children (second on the way) does not believe his behavior is in any way abusive just because he does not hit me. But I believe otherwise. His words and behaviors have taken such a toll and stress on my mind I feel like I'm loosing my mind. He will blame me for everything that happens to him and never take responsibility for his actions. He always says it my fault for whatever he's going through in some way. And honestly I know I had my part but he never see's his own wrong. I'll try and express my feelings he'll say I'm sensitive  And then he'll say things like I'm childish and that when he talks to other grown adults/women that they never have a problem with what he has to say. He constantly bring up my past mistakes and I feel like he tears me down for my mistakes and my past and makes me feel stupid and insignificant. Am I being crazy or is this abuse? What can I do to stop the cycle? With baby number 2 on the way idk what to do. We've been together for 5 years now and I thought that he'd have changed by now but it seems like the attacks keep getting worse.