Symbicort causing vomiting and diarrhea?

Has anyone had an issue with Symbicort causing vomiting and diarrhea? My 7 year old has had this issue off and on since starting on Symbicort. She has been on it for about 2 years now. These symptoms were pretty rare, but have been getting worse lately. Maybe she has GERD (acid reflux) and the drug is making it worse. We have had her on a gerd diet for the last week, but she puked and had diarrhea again last night. Her bed has been elevated 6 inches for the last few months. We went to an allergist, and she felt she is not allergic to any foods. We went to a GI and he said all her tests came back negative. (no parasites, no celiac, no crohns, no colitis, no ibs) We have been keeping a food journal, but there doesn't seem to be any glaring culprit.

No we haven't stopped the symbicort, cause she has had to go to the hospital a few times for bad asthma, and it seems to work well for that. We are going to try another medicine called Dulera, and see if it helps. I don't know what tests the GI doctor did, he did several blood and fecal tests, and he said everthing looks normal, and suggested it may be acid reflux. We have also started her on probiotics, it may be an immune issue. She has been taking flonase and claritin for allergies. We r gonna stop the flonase for a bit.

Thanks Beave!