I feel like I'm ovulating too early

I just finished my period on Nov 20th. On Wednesday night I took a Clearblue Ovulation test and it was a blinking smile (high fertility) which is only cd7.  As of today still a blinking smile. I also used a ovulation test strip which showed nothing. I've been using the Clearblue tests twice a day, once at FMU and once around 7-8. We BD'd on Wednesday, twice Thursday and once today. Going to again tomorrow and Sunday and Monday. I feel like my fertility days are way to early after my period. This is my first full month off BC and last week was my first "real" period off BC. Seems early to me.