Could sharp pains in ones right side be from problems other than the ascending colon?

Yes. Muscle spasms are common and can cause sudden, sharp, knife-like pain in the flat muscles. They should go away with rubbing them, like a charley horse in your leg. If they persist, or are associated with bowel changes, blood in the stool, weight loss, or appetite changes, it may be something more important. See your primary provider, and good luck!