... kit. It was only my 2nd day of taking it when suddenly I developed stomach discomfort. I stopped taking Qsymia but for 3 days I've been haing stomach ache and diarrhea that I can't even go to work or go out without being afraid of losing control. Is. This cause by only taking Qsymia for 2 days? Or could I have something else? Plus I'm extremely tired I can sleep day and night!