period isnt here?

Hello ladies!!

So before I get words thrown at me, yes I was stupid and took two Plan B’s in July. Please! I know!! Big mistake )-:

My period didnt come until Aug. 27th and it was normal. It came again on September 27th which is what I assume pretty irregular. Then its October, and my period’s expected date was Saturday, the 26th. I am 2 days late on my period ): is this normal due to Plan B’s effects?