For how much days up to an ovulation there is a cervical slime fertile kache...

[Olga]

For how much days up to an ovulation there is a cervical slime of fertile quality?
Thanks in advance

[Soboleva L.I.]

Dear Olga! Change of character of cervical slime occurs or happens some days prior to an ovulation (2 4). It is possible to speak only in each concrete case More precisely.