1 week after plan B. Am I pregnant?

had unprotected sex with my fiancé last Thursday (fertile window) and I took a plan B the same day. I also noticed egg white CM that day. So I haven't had any withdrawal bleeding or spotting and this is worrying me(not sure if the pill actually worked). I still have 12 days until my next period according to Flo. I've had sore breasts, backpain, fatigue all week.

Anyone else had no bleeding and didn't end up getting pregnant?