I had a positive Ttg blood test 45 normal<20 I then had to wait seven weeks for my biopsy which came back negative. I had been gluten free except for a 5 day gluten challenge before my blood test for 4 months , my GI doc said to stay gluten free until 3 days before my boipsy. Both times i ate the gluten I got severe stomach pain, felt like I was drugged...