To make a rather long story short, last Thursday night I spent the night in the ER getting poked and prodded. It turned out, I had an inflamed gallbladder full of gallstones, which had to go! So now, I am one organ down, and recovering pretty well.
Unfortunately, they didn't let me save the gallstones, although I asked. And they wouldn't take out my appendix while they were in there, either, although I asked.