What could cause a tugging /stabbing/ burning sensation 3 inches above the belly button? I do have a history of Crohn's and do not have my appendix.

Many causes. There could be many causes for this, including Crohn's inflammation in the small intestine, pancreatitis (from a medication for example), gastritis (inflammation of the stomach due to stress or medication or other causes). It could be from other causes even shingles in the skin. More complete information about the symptoms is needed. .
Lots of things. It could be anything from gas to constipation. The best way to find out for sure is to see your doctor.