Upset & nauseated belly occurs every few months lasts for a few days, it feels better when laying down.food doesnt make it any worse.have gerd /hernia?

Gastroparesis ?: GERD, biliary dyskinesia, peptic gastritis or gastroparesis are all possibilities. I suggest you have and upper endoscopy along with an abdominal ultrasound and/ or HIDA scan for further evaluation.

Nonspecific: Your symptom cluster is not specific for any particular diagnosis. Best to see your doctor for a more complete evaluation. ask if a referral to a GI specialist is appropriate. Hope this helps!