I remember two or three times in my early life where I felt appendicitis-like symptoms only for them to go away after a few hours. That was until one night when the pains persisted past midnight. My roommate insisted on taking me to the ER. After several hours there I finally got checked in, had a CT scan, and prepped for surgery. The docs said I did indeed have appendicitis, and in fact had scarring from past episodes. Before the surgery the pain actually started to subside. I wonder if I could have moved past that episode, and if it would have hit me years later.