Hi and thanks for posting

Lots of people worry about the colour of their stools ,without realising that it's usually to do with their diet or if they have been diagnosed with IBS ,this also will be not an unusual occurrence. You may already be aware of the IBS Network website here  

It sounds like you have some anxiety about your health, which most probably , to be honest, isn't helped by looking at cancer forums.

We would always advise you to go to a GP if you are worried about your health, as no one here or on the internet will be able to give you a diagnosis. So do make an appointment with the GP so you can go over any concerns you may have about your health.

All the best

Wanda