You need to try and stay calm and stop making statements that you do not know are true...because there is the most minute...close to nothing chance that you have colon cancer.
Anemia is completely common among women of childbearing age. I think just about
everyone I know has had it at one point.
You'll likely be put on Iron supplements, and that will be the end of it.
The bleeding as I said in your previous post (and what Paniccu said above) is certainly due to hemorrhoids and fissures.
Have you started the Health Anxiety self help that I suggested to you yet? If not, please do. It will help.
You are going to be alright.
"Courage is not the abscence of fear, it is feeling afraid and doing it anyway!"
"Worrying does not empty tomorrow of its troubles...it empties today of its strength."
Corrie Ten Boom
Panic Syndrome recovery due to CBT