My 15 year old daughter had, what we thought, was a stomach bug today. She has been throwing up and has had diarrhea all day. She is now complaining of lower back pain. She said its like menstrual cramps, but in her lower back on both sides. She also said it is constant. She did not have a temp all day, but now she is reading at 100.7. She is not one to complain and she has been in tears a few times today.