I agree. It sounds like your gut is inflammed and can react to anything. Eat what was working for 2-3 weeks and wait for your gastro appt.
Cant recall if you are taking probiotics and/or digestive enzumes - if not give think about starting and do give it more than a couple weeks to help.
Once you get your system to settle...wait another month then introduce new foods...but never more frequently than one food item at a time with at least three days between trials.
I been taking probiotic for 2 weeks and was wondering if I should stop, I did start taking my digestive enzymes again as of the last 2 days and I wondered if I should stop as who knows what else could cause a reaction? I feel digestive enzymes they help with gas though.