Rolf,   It really doesn't matter what they call it, beit acid reflux, fibromyealgia, arthitis, obesity...........it is all coming from the same root cause!!!!  Too much acid wastes stored in the body.  We are all acidic due to lifestyle, diet choice, stress levels and now, due to acid rain, even the water we drink is acidic!  You can now have a water filter machine hooked right up to your tap that filters, ionizes and alkalizes you water.  Drinking alkalized water ( the way water used to be on the planet before we polluted it!) helps restore the bodies pH balance and returns the body to a state of health.  Just water, pure alkalized water.  Before you resort to medication, where the side effects are usually worse than the disease, research  ionizing/alkalizing water.  You'll be happy you did.  Trust me.  I'll never drink any other water again!!  Good luck and take care.     PS  Your symptoms sound like acid reflux.