Boyfriend mentioned having another?!

Okay so things with my boyfriend are far from perfect. I have actually decided to leave the relationship due to abuse however he obviously does not know that because it wouldn't be safe for me if he did. Anyways I have a 4 yr old from a previous relationship (bio dad not involved) and I have a 5 month old with current bf. I hated my last pregnancy; solely because of him. He treated me horribly. The only thing he didn't do was physically abuse me because the baby. But he abused me on every other level and after the baby was born I found out he had cheated on me with his ex the whole pregnancy. Then this mother f'er says to me on Saturday "are you in birth control right now?" I said "yes, why?" He says "thought we should start trying for another one." Um dude are you serious?! In what crazy delusional world are you living?!? Why would he even think I would be down for that? I told him I have to at least wait a year because of c-section. I am hoping and planning to have safely exited before then. But I'm just shocked its like he can feel he is loosing control and trying anything to gain it back. I'm worried he'll try to sabotage my bc somehow to get me pregnant. It's the nuva ring so I think that would be hard, but still....he knows how I felt while pregnant so idk why he would even say that.