So, I met with the surgeon this morning. When did they start graduating from medical school in infancy? My doctor should not be younger than my children!
Anyway, he said that yes, I need gallbladder surgery, but the situation is not as urgent or dire as my GP's receptionist made it out to be. He was willing to do the operation right away, but we agreed with his suggestion to run additional tests first and see what else is going on with my guts. My symptoms have been all over the place, and he agreed that it sounds like I might also be dealing with gastroparesis.
We'll start with a test for that in 2 weeks, then decide whether I need to swallow a camera for further testing or just go full speed ahead to remove the gallbladder. I really liked the doctor, so I'm feeling much better about everything now.