AF due 12/6. 34yo TTC 6 months. Irregular. Any buddies out there?

Erin
I've been TTC for 6 months, but I have very irregular periods. My OB gave me provera to cause a withdrawal bleed after 3 months of no period. I had a period in November and AF is expected Dec. 6 so I am currently supposed to be in my fertile window. 
 I've taken the clear blue easy advanced digital OPK and it was negative Wednesday followed by "high" on Thursday, Friday, and Today.  I took a regular clear blue easy digital today too and it showed "peak" while the advanced model only showed "high" fertility using the very same urine sample.   This is so confusing!