you can lay off the salt, drink plenty of water and no caffeine, eat chocolate :) (but that causes acne), eat healthy :( , hot baths,
ibuprofen, bananas, lay a hot water bottle on your tummy, gentle massage, and if your at school you can go to the little girls room and get a hot damp paper towel and sit down with it on your lower abdomen then go back to class....
hope you feel better soon, take care.
<3 Gracie <3
expierience, the body book: american girl, and proof