AHHHH! HELP!! WHAT DO I DO!!!?

I WOKE UP THIS MORNING TO A SNAKE ON MY BED IT IS ABOUT 1 FOOT LONG AND ITS BROWN IM USING MY IPHONE RIGHT NOW (IT WAS NEXT TO ME) IM SCARED TO MOVE THE SNAKE IS ON TOP OF MY BLANKET AND MY LEGS ARE RIGHT UNDER IT. HELP WHAT DO I DO!!!