Hello! You might remember me, because I have this exact issue. It feels almost as if I wrote this post, because I'm going through a very similar struggle. I think OCD experts wouldn't approve me saying this, because I'm providing reassurance, but I want to anyway. It's totally fine. There are tons of possible explanation for why this is happening, but none of them involve a possibility of you being a bad person. It can be hyperawareness on normal ongoing body sensations, anxiety interfering with your body processes (someone told me this under my post), etc.
It's probably scary that a part of yourself goes against your will: "I didn't want those sensations, why can't I control them?" But, once again, it's just a reflex we have, which doesn't mean anything. As long as you don't go out of your way to actually commit any crimes, you can live your whole life with POCD and no one will get hurt.
Finally, here are some things that help me. First of all, my OCD heavily depends on my mood. If I'm happy, OCD is much easier to deal with. You're taking an SSRI drug and I really hope it does its part. Next, I noticed significant decrease in anxiety when I'm not focused on groinal sensations. It's not an easy thing to do, but being concentrated on a dialogue, music or your thoughts might help you. Just don't forget about your surroundings.
Okay, my last bit of advice is regarding right mindset. You should remember that success isn't measured in how many groinal sensations you had, but in how much you worried about it. First step is not worrying, so that your brain realizes there's nothing to worry about
It's really a tough challenge, because it goes against our values and tries to scare us even more with physical sensations. But I believe it's very possible to get rid of pocd ^_^ Contacting a therapist would also be a good idea, if you haven't already
