When I was in kindergarden I had an appendicidus. I was afraid of the doctor so for months I tried to hide the pain from my parents, and I did a pretty good job, as for a while they just thought it was stomach aches. when they finally realized something was wrong, they took me to several pediatricians, all of which blamed it on gas.
Then one night my parents noticed the pain was back, and it was worse than ever. I could barely walk. They took me to the hospital, and according to my mom, the following conversation took place:
Doctor: "When did he have his appendix out?"
Mom: "He hasn't had his appendix out!"
So as it turned out, my appendix had already exploded, something that is generally fatal, but for some reason I had a wall of fat built up around my 'pendix and all the 'pendix poison got on that, so they just removed the fat. (what's weird Is I was a very thin kid. Like, anorexic thin. Heck, I'm still that scrawny.)
So I was in the hospital for quite a while, and got home around Christmastime, though I can't remember if it was before or after.