I have had coffee ground stools for several days. initially thought is was a reaction to amox i was on. today had 7 bouts so far?

Black stools: Black stools can indicate bleeding in the upper GI tract and the fact you had 7 episodes today is concerning. Certain medications such as pepto-bismol can cause black stools, amoxicillin is not one of them. I suggest calling your doctor now, if he or she is not available go to the ER. Best to be safe.

Gi bleed: Coffee ground stool indicates an upper gastrointestinal tract bleed from a peptic ulcer perhaps and needs to see doctor