Worried mommy

Another thing is she has lost 5  pounds since starting gluten-free. Don't know what to think about that, I just don't want to her loose any more.  When I mentioned it to her per he made a comment that he should go gluten-free to loose weight. I don't know if I should worry about it or just see if she looses any more. Since on gluten-free she eats less then what she used to before. 

My DD tested negative for Celiac and biopsy came back negative. Doctor told us to try gluten-free and so far it has helped her a lot. Before we stared gluten-free we ordered a bunch of Girl Scout cookies and the other day they came in she was sad that she wouldn't be able to eat any, and literally stared at them for a long time reading all the ingredients hoping that one would be ok to eat. I explained to her that if she ate it she would feel the pain again, and that it was her decision. Now I just want to state that she is all for the gluten-free diet because she has noticed a big difference in how she feels and has never given me a hard time about starting gluten-free. Her decision was to go and try a cookie she ended up having two thin mints and Nothing happened. No stomach pains, no diareha ...nothing. I was lost. Still am. She hasn't had any more since then but not to sure what happened.

I don't think milk is the issue, she always has cereal, cheese, rice pudding, etc., and no issues with those. My only other thing would be the different brand of yogurt. Thanks for your input though I appreciate it.

This evening I made a rice and chicken dish for dinner. We eat plain yogurt with our rice as a side dish with and today was the first time I bought Dannon plain yogurt. That was the only thing that she had that was different, I have made this dish a million times and she doesn't complain from it. Today afer dinner about 45 minutes after she had severe stomache pains and diareha. Her pains were so bad they kept her crying for about an hour. I gave her some children's pepto not to sure if they helped or not, but OMG I don't know what happened or if it could of been the yogurt. It doesn't have any gluten in it.

So if she ate it with no problems makes me wonder what is going on with her tummy.