If you doctor said it was a gastric problem, what tests did he/she do to determine this? What diagnosis did they give you? Did they give you any medications or tell you to change your diet?
Do you have a history of gall bladder disease? Are you more comfortable in a certain position? If so, what position? Are you having an nausea, vomiting, diarrhea or constipation?
Did the doctor do an EKG/ECG or not? If not, with your symptoms, I would seek medical attention elsewhere, even if you have to go to the ER.
Try looking into symptoms of fibro, and cfs I suffer with most of what you describe
If ECG turned fine it must be another cause. Possibly anxiety or some other cause. Most missed diagnosis is anxiety/depression and OCD.
Forgot to add that my BP was also slightly higher than normal. I was 140/90.
And Doctor was saying that all was because of gastric problem