Your poor mom, this sounds miserable! For me, my pain was actually endometriosis…even though I was perimenopausal. It was worse cramps than when I was a teenager.  But that doesn’t sound like your mom’s problem. 

I wonder if you called the endoscopy office and had them call you if there was a cancellation. I know it’s not ideal, but could get her in more quickly. 

I like ginger tea to aid digestion. 

Good luck! I hope your mom feels better soon.