help meeee

So <a href="">Eve</a> says I’m scheduled to have the first day of my period on the first day of freshman year. The first day is the heaviest, the moodiest, and overall the worst day of my period. I feel like crap, I get diarrhea, bad headaches, it’s TERRIBLE. And how I have to deal with it on my very first day of high school? HELPPPP how do I make it late?