I haven’t had a painfree bowel movement in months thanks to my ex boyfriend

My ex boyfriend cheated on me and contracted herpes and never said anything to me. We decided to try anal for the first time in August last year. That’s how I got herpes. In my ass. I’ve since broken up with him and have a new and wonderful boyfriend and am on crazy expensive medication so I don’t transfer the infection to him. The problem is that inside my ass there are still lesions that won’t heal. I cry every time I have to poo. I’ve had every exam done, I don’t have HIV or anything else that could keep myself from healing. I don’t really know what to do. If anyone has any tips, that’d be great.