I took Plan B 2-3 months ago and my period has been irregular ever since, which I've heard is normal. My period this month was 5 days late, and I am now on the second day of my period, and I had protected sex but the condom slipped inside. Could I take Plan B once again? I've heard it is still slightly possible to get pregnant while on your period regardless if you're menstruating or not, but I don't know what to do.