Boyfriend issues

So I️ have anxiety and I have a boyfriend who was amazing and really romantic for the first like month of our relationship. He has gotten distance and really only comes over if I ask to hang out. Oh he is a “recovering pill popper” and can’t get an errection because of it. I keep asking him what’s wrong and he just says he’s stressed and just frustrated because he can’t exercise. Which is the only thing that makes him feel in control. Also he is a very flirty guy so he does have a lot of girls that are friends and even keeps in touch with his last girlfriend right before me. Oh and he’s never told her about me. Is there something wrong that I don’t know? It feels like I’ve done something but I also know I’m getting my period tomorrow. And I’m fucking anxious and stressed. HELP ME PLEASE!