HI and thanks for using the forum.
should occur 14 days prior to your period
- so if you have a 28 day cycle, ovulation
should occur on cycle day 14 (cycle day 1 is the first day of your last period).
Ovulation predictors detect the LH surge and ovulation occurs 24-48 hours after this surge. So if you have a regular 28 day cycle, you should detect your LH surge on cycle day 12. Once you detect an LH surge, you can stop testing with the predictor kits.