what are some natural remedies for period cramps?

i dont take pills, at all, and i want to know what some natural things i can eat are that will help with cramps. i know bananas help, but they dont always help me. i have also tried cinnamon tea… didnt work at all…. help!
1) i am afriad of doctors and hospitals
2) i need to know about something i can do, like, before school. cuz i cant exactly take a cat to school and just lay down with it in the middle of the day…