"Hello girls, I am waiting, waiting, wiating for Monday to come. I go in for my blood test on

Monday morning. This is my first FET and i have a couple questions:
My FET was January 17th with 3 day embies. I am on day 32 of my cycle and haven't started my period yet but had a BFN this morning. Should I expect to start my period before my blood test if I am not pregnant or is it normal to have a longer cycle during a FET?
I have had menstral-like cramping off and on for the past three days but no period.
Just thought I would pick your wise brians.
thanks a million!