I woke up this morning with a sharp stabbing pain right above my belly button. It comes and goes and is nearly unbearable. What should I do?

Seek medical help. if the pain is that severe, you most likely need to be seen immediately. If your doctor cannot see you in his office today, you may be better off going to the emergency room. There are multiple potential causes of such pain, and you will probably need tests to help sort it out. Good luck.