I am on lasix lopressor, plavix, xanau,zantac oxycodone,I have had CHF also was on Flagy and cipro for I have had two surgery on my colon due to div of colon and they stop the flagly and cipro and put me on augmentin and I started throwing up and some of it is small amounts of blood, and 2 weeks ago I had fever, throwing up even liquids ended up in the ER and I have since then started throwing up and it looks brown but not like coffee grinds, how do I know if it is the augmentin making me sick or is it from the div of colon since I know the signs but never threw up like this before when I had the surgery in aug of 2011 and Sept of 2012 Thank you