Clearblue digital opk

[jellybean87]

I used the clearblue digital opks this month. I got the solid smiley on cd16. I know it says the peak lasts 48hrs, so do I count cd16 as the day I ov or cd18? Just trying to work out when to test.

 

[Angel022605]

I recommend temping along with OPK for a few months.....that really helped me realize I Ovulated on the second pos OPK which is 36 hrs after my first pos OPK....it really helps you pinpoint exactly when you Ovulate in relation to your OPK....