I have bipolar disorder. I am not abusive, in any way.

Being abusive and having bipolar are two totally separate things.

If he's abusive, it doesn't matter WHEN he is being that way - it means he is abusive.

His throwing up and whatnot? What a great act he's got! Really, the throwing up is quite a unique tactic. But like everyone above, including you, knows is that he's just doing this to keep you there - he wouldn't feel like he has any power if you were gone.

You deserve way better than that. It sounds like you already know what you want to do! Trust yourself!