Have you been checked for inner ear problems?
Perhaps you have a food allergy? I would say abdominal migrane due to stress or migraine variant? I have a migraine variant and was just throwing up at night all night and stomach pain and no headache. It is possible but my symptoms were at night only and would continue on into the next day if not treated. I was EEG positive and got on an antiseizure/antianxiety med and it helped. I don't know if this is related to your problem just mentioning that you can get stomach problems from a migraine. Can you pinpoint certain foods that trigger it? Only other thing is something like reflux or even Krohns or irritable bowel. Have you had an upper and/or lower GI? I'm sorry you are going thru this.
I recenitly dealt with chronic stomach pain and a drug that really helped me is Xifaxan. It's an anti-parasite drug and it also helps many people with IBS. The theory is that there are unknown parasites in the gut causing pain and inflammation. I took it for 10 days, but I didn't notice significant improvement for about 5-6 days. I continued to improve for 3-4 days after I finished it as my poor ravaged stomach healed.
One more thought... I also had some gallbladder pain along with my stomach pain. I researched the HIDA scan, and I learned that if it's really painful, it could suggest the gallbladder itself is infected (even if it's functioning okay). I was prescribed Ursodial for a couple months and the gallbladder pain faded away. I don't know if the Ursodial helped, or if it was referred pain from my stomach that the Xifaxan took care of. I was just grateful my doc was willing to try things not knowing exactly what was causing the problem.
No I haven't.. Maybe I should look into that?
I haven't had an upper GI done, but I do know that there are no certain foods that trigger it
I had severe gallbladder pain during the procedure, but then it went away. Did yours go away? Or were you prescribed medication because the pain didn't leave?
I was considering the HIDA scan, but my gallbladder pain went away. I was treated for both h.pylori and unknown parasites and each treatment helped me feel a bit better. I also had too much stomach acid which was causing pain. (I clearly had multiple issues.)
In my research on the HIDA scan, I learned it could be painful. But severe pain suggests the gallbladder itself could be infected. Sometimes an infection doesn't show up on blood tests or on scans. Did your scan show full function?
Have you been checked out for a hiatal hernia? Do antacids or mylanta or pepto bismol seem to help, even if just temporarily? Could it be an acid balance problem? Have you tried eliminating gluten from your diet?
Do your intestines seem to be functioning normally? Too slow or too fast or too many? Do you seem to have undigested food coming through?
Sorry for so many questions. I don't know if I can help, but I can share from what I learned about my own experience. This is a scary thought and I apologize for sounding scary, but a friend of ours developed colon cancer in the transverse colon close to the stomach. Her only symptom for several months was stomach pain and nausea. Two stomach biopsies didn't show it, but when they couldn't thread the tube through for a colonoscopy, then surgeons went in and did exploratory surgery and found it. You are much younger than most colon cancer patients, so this is really unlikely, but given the unknown, it might be worth asking the doctor if s/he thinks it's a possibility.