What should I do?

My boyfriend and I are fine but I have severe anxiety and depression. I get jealous but he's done some not ideal things like looking up his ex on facebook. Basically we can't fight healthy. Yesterday we were talking about how he thought guys shouldn't go to jail for sleeping with an 17 year old when they are 18. I disagreed and he was losing the argument so he threw in my face that I hadn't been checked for STD 's before we had sex (I have a severe medical phobia and can't go to a doctor with out breaking down mentally) also he hasn't been tested either. I said he said it to be mean and he broke up with me. We live together so he said he wants to be room mates "for now." What should I do? I'm swallowing my fear and going to a doctor for medication today which I'm scared of but he's so cruel for not loving me no matter what. I'm really upset.