I agree with Anika. The celiac tests aren't the most accurate. You could also have non celiac gluten intolerance. It means that you have a reaction to gluten without the IGE (I think that is it) reaction. It will always come up as negative on the celiac tests. it i often simplified as NCGI. So you may want to try going gluten free on your own and see if it helps. Know that gluten hides in A LOT of places. You can get information on going glutne free (and other digestive problems) at celiac.com. They have a message board there that is really helpful.