Digital Ovulation

S
Hi,
I've been using the clear blue digital with dual hormone indicator for the first time.
My cycle is about 27 days, so I started testing 7 days after AF.
Glow days my AF will start in about 2 days but the ovulation kit is giving me a flashing smiling face indicating High fertility. I've used the cheap hospital ovulation strips and no LH surge is detected?? Help thanks