Upper Abdominal null pain more so in the right side. Comes and goes. Will get back pain from time to time. In the middle of my chest once or twice a week my sternum will get irritated. Not sure if the discomfort is radiating up to the chest. My stool is green. I do get really nauseous from time to time and my lower abdominal crampy pain. I am 34 male , consider my self healthy 210 lbs. I have had multiple liver, pancreas blood work done. Also had a barium X-ray for stomach and esophagus. Everything came back normal. No throwing up, pain when i eat , swallowing is fine. Have not had a stool test done, or gall bladder ultra sound. Does that sound similar to anyone? Sometimes I feel my mind over thinks symptoms. And advice would be great. I do not smoke or drink.
there are so many things it could be. Could be related to stomach, gallbladder, intestines, etc.
I think it’s always a good idea to have a complete abdominal CT scan to check all your organs out if you’re still getting symptoms. also, get a stool test. those would give you peace of mind.
try not to overthink symptoms. All that overthinking does absolutely no good and chances are what we are thinking is not accurate anyway.
There’s a great meditation on YouTube called detachment from overthinking . lay down, relax and listen! Plus hundreds of other meditations for anxiety and overthinking!
take care of yourself! 
You need to get a scan done of your stomach, if it comes back normal ask for an endoscopy.
Ask for a stool test and an abdominal ultrasound to check your gallbladder. Do a food diary to see if a food is causing your problems since you get pain after eating.