I Am 28 Years Old I Suffer From A Number

I am 28 years old I suffer from a number of illnesses I have diarrhea a lot.lately I noticed red particles in my stool I examined one it looked the skin from undigested corn but the paper it was was stained a little like blood or something I had colonoscpy and a endoscopy this past summer so I don't think its colon cancer I'm worried about an ulcer I drink a lot I smoke and take a baby aspirin daily