Freaking out

Dani
2 months ago, I took a plan b pill 5 days before I was supposed to ovulate. I got the bleeding people usually get afterwards about a week later, and the week after next I got my "regular" period. So I was supposed to have my next period 10 days ago but it hasn't come yet. Today I have very sore breasts, and the only reason I'm concerned (because I know that plan b can make periods come late, early, skip, etc) is because I had protected sex 3 times since the plan b incident. Everything seemed ok with the condoms each time but of course I can't be sure. Someone pleaseeeee tell me I'm ok