Ovulation help!

Nicola
So this is my Glow calendar. AF came on 10th (5 days early). 
My fertile days (according to my calendar) started yesterday and run till 26th. 
I took a clear blue digital ovulation test this morning and the result was low. ⭕️
When can I expect peak fertility result? Or my most fertile day? 
Any help or advice would be really appreciated. xx