I agree with Park- reflux!
Try some Tums or liquid Maalox or Mylanta. All very likely caused by anxiety/stress. Another suggestion- go get some generic gas pills. I buy Walgreens brand (in little green gel pills you swallow), but all are good.
I swear by these things. Try the antacids & the gas pills & see if it quells. The liquid maalox/Mylanta does have gas medicine (simethicone), but you can take the extra gas pill too- you can't OD on it & there are no side effects.
Let us know if you try it & how it works. I'd slip in a question to the doc too. Get more bang for your buck at your daughters appt
Always sending you much peace and love!
Lisa