I am a 52 year old female.I keep having these bouts of upper abdominal pain and the pain intenisfies rapidly and then I get chills,nausea and vomiting.I can't lay down sit or stand up as the pain is the same in any poistion.I have had an ultrasound,hida scan and last night had a ct with contrast.Everything comes back normal.It normally starts not long after I eat.It doesn't matter what I eat.Can anybody shed any light on what might be causing this.I am going to GI Dr. next week.I need help.Thank you for any responses.