GUTS by Reina Telgemeier audiobook for kids

Raina wakes up one night with a terrible upset stomach. Her mom has one, too, so it is probably just a bug. Raina eventually returns to school, where she is dealing with the usual highs and lows: friends, not-friends, and classmates who think the school year is just one long gross-out session. It soon becomes clear that Raina`s tummy trouble is not going away...and it coincides with her worries about food, school, and changing friendship. What is going on?