My period finessed me

So i had hockey practice last night and I saw that I wasn’t bleeding because I had a tampon in for a couple hours and i went to sleep without out a pad and was happy. I wake up take my shower and finally put on cute under since I thought i ended my period. As I was gonna dry my hair with my towel i see red and I’m like wtf is this and I look at my under wear and it’s fucking blood. WTFFFF WHY I WAS LITERALLY SO HAPPY GOD DAMN IT RUINED MY CUTE BRAND NEW UNDERWEAR FROM VS