Jealousy issues

My husband and I have been married for 6 months, and before I met him I was in an abusive relationship (mental and physical) with the father of my kids for 6 years. I know that i stayed for too long, but it wasn't always bad and I was hopeful. Anyway, rewind to the present, i met an amazing man, who is just great and loves me more than I could ever imagine, problem is that I have become extremely insecure and jealous. I also found out that my ex cheated on me with different women and I was clueless, and I never thought he would. Now I am left with trust issues and my husband doesn't deserve that. I don't want to be like this, I wasn't like this before, I used to trust completely and now I feel so vulnerable. We've talked about counseling, but haven't gotten around to it for one reason or another. What can I do? Any advice will be appreciated, I know that when my jealousy hits I sound and act batshit crazy. And my husband doesn't deserve that, he's very understanding, but I don't want to push him away.