For the last 4 days I've had dark red (maroon) colored blood with my stool. (Gross) I'm 52, female. In school for an advanced degree so fatigued all the time (I have a reason!), but also my nails have an odd yellow cast to them. Don't smoke, drink one 4 oz wine on occasion. Slightly underweight which is normal for me. Mother died from colorectal cancer at 67. A wee bit paranoid. Oh, extreme headaches for the past five years, getting progressively worse...migraine. Never had headaches before this. Probably nothing. No pain, a lot of gas. Geez, Maalox and Mylanta have my number! Thanks for your thoughts. Tracy