Have you made any lifestyle changes, tried a GERD friendly diet, kept a food diary to see what your triggers may be? When was the last time that you had an endoscopy and/or barium swallow?
Funnily enough I've resolved to lose weight and I log every thing I eat. I've not fundamentally changed my diet though, just reduced the volume. I eat a lot of fruit and tend not to eat much bread.
I've only had one endoscopy and that was probably 18 years ago.