Need some reassurance!

Hello, 
Just needing some piece of mind. I'm 19, and had unprotected sex last night but he did pull out, still awful I know, I also know there's obviously still a major chance that pregnancy could occur, but I took the emergency contraceptive pill called levonelle, 11 hours after intercourse. I also finished my monthly cycle 2 days beforehand, so if I'm correct most likely my next ovulation is a good 8 ish days off and my period another 3 weeks.
I just need some reassurance that the pill will hopefully work, and if it's worked for any of you, as I'm currently eating myself alive waiting for my next period. Ugh! 
Thank you!