I have been having a lot if stomach issues, tightness in my upper left abdomen and heart like palpitations. I had parathyroid surgery in December which was misdiagnosed for 2 years. I have also had so many other tests, all the heart tests, ultrasounds of pelvis and abdomen, CAT scan of pelvis and abdomen (I think they also scanned my chest), chest xray, thosands of blood tests... the gastrointestinal dr thinks I have IBS but I can t stop thinking something else is really wrong and now I am starting to worry...
After all investigations and Gastroenterology workup if suspected IBS why you're thinking that it is something else. First try to understand the concept of IBS. Thinking too much can add to your symptoms. Get an ECG checked also. Along with serum calcium.