fexofenadine 180 mg

hi ev 1 doc has put me on fexofenadine allergy tab and omeprazole 20mg for reflux with very gassy stomach have been unable to eat a meal for nearly a week and having couple of spoonfuls scrambled egg. he is sending me for blood stool and camera test. dont know what brought it on have been dooing 1000 plus but gave me yellow diarrhea. has anyone had similar and if so would like to hear how u coped with it. thanx