Is burping a symptom of IBS?

Yes it is
I am diagnosed with IBS based on my symptoms:

Episodes lasting 2 weeks or more since 1999
1. Constant extreme stomach gas only (belching)
2. Constant pressure/soreness directly below the sternum(middle of abs
below ribs)
3. Constant nausea
4. Feeling of stomach fullness all day

5. Occasional Quick sharp horizontal shooting pains
around upper abdominal area
6. Normal bowel movements (once a day).

I am also diagnosed with Hiatel Hernia based on endoscopy
I am also diagnosed with a Gall Bladder not functioning properly based on Hida Scan with CCk.

Does anyone have a lot of burping?

Yes unfortunately. I have it is every day, all day long, for months
it sucks!!!!!!!!!!