I had a girlfriend who was later diagnosed with fibro, I myself have an immune disorder after having had pneumonia five times in seven months.  As I type this I'm doing my weekly infusion with four needles in my abdomen getting the antibodies that give me normal immunity - I probably won't be receiving COVID antibodies for another year if I'm lucky.  Crohn's is not an unusual condition from people with my condition, I read about it a lot on the boards.  Definitely not a lot of fun.