I have had 2 consecutive days of jet black stools. I have never seen or had this before. Have had zero pains, I started taking 2 ibuprofens 2 days ago for arthritic joint aches, before bed time.. Could this be a clue? Ido not take any other meds but (1)acetaminophen, aspirin, caffeine combo pill every 5/6 hrs for neck tensions(fibromyalgia ).. Have been doing this for many years. I am 64. So, black, black stools zero red?? Thank you, S.