TMI! Warning help

No other way to put this other than a story, right so I woke up this morning as you do and the dreaded nightmare came, my period. Normally not a big deal put in a tampon change clothes bobs yoir uncle however pull my shorts down ( as i sleep in them) and blood just pours down my leg and on the floor now this has never happened before any advice???I'm incredibly heavy for once 😔 embarrassing