We codies often become as addicted to our addict as the addict does to their drug of choice. Unfortunately, the only way you can "get over him" is to have absolutely no contact with him. How can this man be the "love of your life" when you haven't lived your entire life yet? This man has nothing to offer you. Block him on your phone and tell mutual friends and family that you don't want to hear anything about him. Yes, it's difficult, and you will have a period of withdrawal, just like an addict does when they stop using.
You have a beautiful child who loves you and needs you to be healthy. Get your medical procedures taken care of and then set about taking the very best care you can of yourself and your child. You can do this! (((HUGS)))