I don't think it is colon cancer. Normal symptoms for that would be: dark blood in stool, mucus in stool, slowing of bowel movements, lower abdominal pain, vomiting, fever, light headed, fatigued, etc.
It may be gas that you have, or if you want to talk to the doc, he me say it is irritible bowel syndrome
good luck, and keep us updated!
Love,
megan