Clomid -- First Cycle Question

I'm on my first month of clomid (100mg) and took it 2x a day for CD 3-7... Took OPKs days 10-14 in which I think I was ovulating based on the darker lines (am I the only one who struggles to tell if it's a darker line?!) and we were sure to have intercourse on the day of the darkest line... However, Glow is telling me that my fertile window is still yet to come?! For others that are taking clomid on CD 3-7, when are you being told you should test for ovulation? Want to make sure we aren't missing opportunities! Thanks all!