How to describe a tummy ache at the age of eight

I try not to mention my children too much on this blog, but I have to share my daughter's latest articulation. She's eight, and she has trouble getting to sleep quite often, with a sore tummy.

Last night she said, "My tummy feels trembly and quite uneasy and I seem to have a terrified, shocked feeling all through my body."

I think she's going to be a writer...