I've been paranoid abt colorectal ca as have nausea and abdo discomfort so i put my finger on my anus what should you feel? i felt sthg ?

Self -diagnosis: of colorectal cancer by palpating one's own rectum is not likely to be very helpful. If you have chronic abdominal pain, nausea and loose stools - recommend medical evaluation.

Colonoscopy: Most CA are above the anus , so you'll never feel it. See a gastroenterologist and request a complete colonoscopy or a least a flex-Sig. This is the definative test and should put your mind at ease