hi, i had fresh blood in my stool,so on doctor's advice i took antibiotics 6 years ago.evry thing was fine but d same prb arised few days back.i have taken antibiotics n bleeding is stopped.color of d stool is light/deep red.blood comes b4/after/wid the stool.n a butter fly sensation just under my left lower rib aggravates my tension.Are both things interrelated,wat cld be reasons,i m worried,plz rply me ASAP.