I am 64 yrs old. I am overweight and have some health issues. I see my Doctors yearly unless I am having any issues. I do have IBS which is just a way of saying that even though I have many gastro problems, they can t find anything wrong when they do my testing. I had a colonscopy/endoscopy in late 2014 in which all was good. My latest bloodwork in March 2017 was good. I am always tired. Once in a while, like yesterday I had diahrrea which was awful, the odor was sour like. I felt lousy, and I had a few spots where there was red blood. I do have hemrroids. I do have normal movements otherwise. Just very concerned. What is your opinion on this?