I guess maybe it could be that.
Maybe it's your gallbladder. Have you had an ultrasound of your gallbladder? I would start there or it could be acid reflex. Start with your gallbladder and then have the doctor check your stomach. My grandmother had severe chest pain one night and thought she was having a heart attack. When she arrived at the hospital, they said that they were going down her stomach to have a look. Sure enough, she had a stomach tumor, benign and the doctors said that she had it for years and did not have any symptoms until that one night.