Pregnant scare

LO
So my best friend messaged me this morning saying:
I told her about plan be being effective within the first 72 hours, and also reminded her of her condition 
(The doctors haven't figured the cause but she hasn't had her period in over 2 years. My guess is either either early menopause, infertility, or hormonal imbalance but I'm no doctor) I don't know if that can effect her chances of pregnancy or what. 
I told her to count the hours to see if she still has time for the pill or to wait it out, take a test and decide what the next step is. That's kind of the options (that I'm aware of) what do you ladies think?  Any suggestions?

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