The best time to begin testing for ovulation is a few days before you are scheduled to ovulate. Ovulation occurs midway through your menstrual cycle.
Your most fertile days of the month are 1 to 2 days before and after your ovaries release an egg. Sperm can live in the body for up to 5 days. So, conception can occur if you make love 5 days before ovulation, and up to 1 day after ovulation.
Predicting ovulation is easier when you have a regular menstrual cycle. With a 28-day cycle, you will likely ovulate on or around day 14, so you will want to start testing around day 10 or 12.
If you have a short cycle, you can assume that ovulation will most likely occur within 4 days of your cycle’s midpoint. So, you should start using an ovulation test kit 4 to 6 days prior to your cycle’s midpoint.
Determine the length of your menstrual cycle before the test (The length of the menstrual cycle is the duration from your first menstrual bleeding day to the day before the next bleeding begins). Please refer to the cycle chart on the picture to determine when you should start testing. If you do not know your cycle length, you may begin the test 11 days after your first period since the average cycle length is 28 days.
Example: If your cycle length is normally 26 days, the chart indicates testing should begin on day 10.