Clomid class???

Massy • Mommy of preemie twins born at 29 weeks with IVF fresh transfer
Is it neccesary or mandatory to take a Clomid class to know how to use it? 
My fertility clinic told me to schedule an appt before taking it, it cost $100 and insurance does not cover it
My only concern is that my appt is for tomorrow, I don't want to pay before assuring I am not pregnant on this cycle . 
I am 11 DPO today and I see people not getting a BFP until 12 DPO ?
Don't know what to do!!! :/