Are there exercises or yoga positions which could help my gerd symptoms and let me avoid surgery?

Not that I know of.: There are many, many things that one can do to control their gerd symptoms before considering surgery, however i would not include yoga on that list. Proven benefits include dietary and lifestyle modifications (avoid caffeine, chocolate, tomato products, spicy foods, tobacco, alcohol), weight loss, avoid large meals before bedtime, try to elevate the head of the bed, and use of acid-reducing meds.

No: But sleeping positions (on a wedge or with the head of the bed elevated) can help gerd and possibly avoid surgery ...