Two weeks ago (March 17), I took Plan B immediately after sex because I had missed some BC pills. I was in my third week of pills, so when I bled about a week later (starting March 24, for about 5 days), my period was pretty much on time.It is now two weeks since I took the Plan B, and I had unprotected sex last night. I have not started a new pack of BC pills. What is the likelihood that I have ovulated right after finishing a period? Should I take Plan B again?

Also, I realize that this was not a smart decision, and I should be using a reliable form of birth control. I am just seeking some advice on how to proceed with the current situation. Thank you