MORTIFIED!!!

SO....My period came yesterday, quite heavily like it usually is most of the time on the first couple days. Today, I used a heavy-flow Always pad, and ran off to school. I was so busy and never really managed to find time to run off to the bathroom at lunch... Fast forward through History, still haven't gone. So, I'm sitting in Spanish, not even thinking about it until I get up from my seat and see a faint BROWN MARK ON THE CHAIR. I scoot over back to my desk, then look down to assess the damage. HOLY COW! BLED RIGHT THROUGH MY FAVOURITE JEANS! Not a little stain, BUT THE WHOLE CROTCH OF MY PANTS! I silently freak out, knowing I didn't have a sweater with me to tie around my waist as I ran to the bathroom. I frantically try to wave my teacher down, quickly ask ¿PODRIA IR AL BAÑO? then off I go! I pull down my shirt as far as it can stretch and run off. Of course, my locker is UPSTAIRS so I have to awkwardly climb up and down the stairs! I have NO CLUE how long the stain was there for, or how many people saw it! Kinda scared to face people tomorrow, hopefully no one saw! Definitely the most uncomfortable I've been in my WHOLE LIFE! Feel like curling up in a ball and screaming/ crying FOREVER!