Cd1 ladies on 52 day cycle - when to start using opk strips??

[Kmcgav]

Ladies the witch appeared this morning so I'm back
On cd1! My average cycle is 52 days so when should I start doing my opk strips?

Any help is appreciated thanks ladies

 

[SLH]

I wouldn't start until day 30 and that's even early. You probably ovulate on cd38-cd40. The average luteal phase is 14 days so 52-14=38 and that is around the time you probably ovulate.