Plan B fear ?

Guys, I had unprotected sex, but I took the plan b pill less than several hours later... I'm still scared... am I supposed to feel something ? how do I know it's working ??? I need some reassurance... 😭

I've taken it before, and it worked, but I spotted last time.. :/

But I also lost my virginity that time, so I was bleeding previously as well. :')

I checked my ovulation calendar, and I was on a low chance day/safe day, and he pulled out, but I'm still worried you know ? :( my period is next week. I'm only 16..