Thanks, everyone! I'll give the story as best I can.
Fifteen days ago I had a sharp pain in my lower right abdomen along with fever, headache, and general malaise. Nine days ago I went to the ER. They did a CT scan and checked me into a hospital room.
Skipping ahead a bit, it appears that I had a perforated colon that leaked into my abdominal cavity, causing infection and abscess. They were having a lot of trouble draining the abscess, but it appears to be finally draining okay now. The more important issue was: what caused the perforation? After several more CT scans and a colonoscopy, they're pretty sure the answer is colon cancer.
So I'm having surgery Tuesday to remove part of my colon. After that, I'm probably looking at chemo and radiation, but that will be figured out after the surgery.
I will probably make some funny posts on Tuesday night when I'm on drugs.
I'm emotionally fine with it all. Thanks for all your thoughts, prayers, and good wishes.