Hi I have had stomach problems my whole life, starting with heartburn and progressing to bloating, abdominal pain, sometimes diarrhea sometimes constipation. Now , for years i've been chronically constipated. I have Hashimoto's thyroid disease and lots of allergies. My doctor tested me for celiac, but only did the IA-2 antibody and folate. Had fine folate and IA 2 came back negative. Should I get an endoscopy to double check, since i've been taking multivitamins before i was tested? Also, I have a recurring rash on the top of my foot that doesn't seem to be related to anything i do, and i have geographic tongue for no apparent reason. Can i have those and not have celiac?