Struggling with Gas During Prayer and OCD

Assalamu alaikum. I have OCD related to religious matters (waswas). Alhamdulillah, after seeing a psychiatrist two years ago, I've improved a lot, but I still suffer from severe IBS. During salah, stress makes gas build up, causing pain and discomfort. I try to hold it in, but it feels like it's about to come out, and I can't tell if it actually has due to my OCD. This makes me repeat my prayers at home even after praying in congregation, because I'm afraid my wudu broke. I'm exhausted and can't find a specific fatwa for my situation. Please advise.