Two Months ago I had horrible pain in my belly button. I went to the walk-in center and was given a CT Scan. It returned negative. I was given pain medication and sent on my way. 4 days ago the pain came back, slowly at first. I saw my Dr. and was given a oral and iv contrast ct scan and blood work. All came back negative. I have been referred to a surgeon, but not until next week, I was given no pain medicine other than Motrin. (although it has helped the pain a bit). I also have been having some nausea. The pain is also spreading above my belly button, the worst of it is when I bend. Also I am not pregnant but have not had my period for 2 months, I am a 25 year old female. What is could be happening to me?