I am 27 years old with a history of benign PVC's. Last exam said heart was normal. I am about 50-60 pounds overweight and have been for about 4 years. I do get heartburn about 2-3 times per week, especially around my menstrual cycle. A few weeks ago I woke up with a sharp burning pain in my upper right stomach, like where my gall bladder is. It went away after a day or so, then came back a few weeks later. This time, it was followed by severe gas. For the last few days, I have felt a weird sensation in my chest. Like a flutter feeling. Like I am anxious or something, but I am not. It feels like my chest is a little tight, and like something may be crawling around or something. It is hard to describe. I do notice that I am burping way more than usual and I still have gas. I do not have heartburn though, and I do not notice that it is worse after eating. My Dr gave me a new pill for acid reflux. I have been taking it about 2 days and so far, not much change. It does not bother me at all at night while I sleep or when I lay down. It is the only time it stops.  I have recently started losing weight, about 24 pounds so far. These syptioms just started out of nowhere. Can this be digestion? Without heartburn?