I have the stinging and pulling as well, only had surgery 7/23. Gas...had a lot to begin with but it went away. Cabbage/brussles sprouts/broccoli seem to make more gas. Noodles in diet when eating...
Got a thought for you I have tried that works great. Take a large bottle of cheap no brand baby oil, add 2 SMALL drops of concentrated Lysol liquid (like you use to add to laundry, etc). Shake well....