Hi...I think you should see the GI..but if you can't get in, see the GP. I do understand not wanting to go...truly I do...but I find that the stress of not knowing is worse than seeing the doctor. For some strange reason, sometimes the things that bother me don't seem to the day I'm going. Murphy's Law..lol!
You could try to take some baking soda in water (half tsp in a half glass of water and sip it when it starts) to see if it helps....if it does, then I'd lean to the suggestion of reflux or gas in the stomach.
I usually get the pain on my left side and into my shoulder when the gas is approaching the splenic flexure. What side is your pain on??
Since tomorrow is Friday, you should still call the doc(s) to see if you can get in asap.
I'm happy to hear the meds are helping. It all takes time.
Thanks for updating your profile...I do know I'd be asking you the same old questions..etc. Most appreciated.
Let us know what transpires.