nostr:npub1ypfcrd4k5ryzlcg8jmdvgrlk29ladfe27z7c2aaq8lvmks6drwqqautsp5 maybe the GAPS method (https://gaps.me) can help you out. It's a broad method you can tailor to your own situation and has been successful with all sorts of chronic problems, like food allergies. You go back to the bare essentials to heal your gut lining, then introduce more and more food (fermented foods are an important part of it). 

Can you still eat fish, chicken and eggs? And were you able to eat red meat before?