Stomach Problems

I really need help because I’m unsure of what’s going on. I’ve dealt with recurring UTI’s for almost three years and I’ve been given a ton of antibiotics to cure them. Last month I was diagnosed with PID and in the course of three weeks I’ve taken four different antibiotics. Now my stomach is super messed up from the aftermath and I’m not sure if I have an ulcer or what. It’s hard to get checked out properly with quarantine going on. I barely have an appetite and within the past few months I’ve lost 20 pounds. I can barely tolerate any food and it feels like they’re sharp needles poking me in stomach. One day I was drinking water and I felt like I was gonna puke. I don’t deal with diarrhea and my stools are usually normal looking. I tried cutting back on meat and processed foods but I just feel weak and lose even more weight. I take probiotics and vitamins now so hopefully that helps. Some days my stomach just feels like its on fire and stabbing needles. Any advice or any idea what this could be? :( I feel like antibiotics have destroyed my stomach.