 [ Symptoms ] relief from sinuses i have been suffering from sinus infections my doctor called in suprax 400 mg for me to take one a day for 10 days i am leery of taking it because i read some reviews that were pretty horrible severe stomach pain and cramps severe diarrhea etc i was on augmentin but it makes me extremely nauseas and bad stomach pains and dizziness any suggestions on what i can do to get over this i am really in need of some relief [ Disease ] you need to get to the er now with your medical history it is not that important when you started bleeding but rather how much you are bleeding right now a rapid bleed in the stomach could cause black stools relatively fast because you are weak and out of breath it would not be wise to delay an immediate medical evaluation