PLEEZ HELP MEE (ballet related, girls only plz)?

ok so today is my ballet recital, ive been rehearsing all week for it. and today JUST NOW i got my period.... i know rite WTF?? were not allowed to wear underwear because it shows through our costumes.... i know what ur thinking.... I AM NOT WEARING A TAMPON THOSE THINGS SCARE THE LIVING CRAP OUTTA ME plus im pretty sure my ma wont let me get any.... WHAT DO I DO??? MY TUTU IS WHITE!!!!!!!!!