bloody diarrhea could be due to various causes piles or hemorrhoids in rectal area could be painless bacterial or parasitic infection of gut could also cause bloating any bleeding lower intestinal blood vessel like in varies or ulcers diseases like irritable bowel syndrome Ulcerstive Colitis or chrons disease but these usually have abdominal pain in addition to bloating and bloody diarrhea Elixis Coumadin and Aspirin all could have increased your risk to bleed so it s good to be under the supervision of a physician to be monitored for further abnormal bleeds while ruling out the cause and tapering the drug dose to prevent any risk of blood clots in condition which blood thinners are being given to you. do not take any medication that can aggravate your bleeding risk like NSAIDs follow a diet gentle on stomach and prevents bloating