Ovulation is the release of an egg from the ovary and happens about 14 days before a period starts, but women’s menstrual cycles are not all the same length. To work out the day of ovulation, it helps to know how to count the days in a menstrual cycle. A cycle is counted from the first day of one period to the day before the next period. So, the day a woman’s ovulation occurs depends on the length of her cycle.

Women who have a period every 28 days will ovulate around day 14 and their best chance of conceiving is between days 11 and 14. For a woman whose cycle is 24 days, ovulation happens around day 10 and her most fertile days are between days 7 and 10, while someone who has a 35-day cycle will be most fertile between days 18 and 21.

Immediately prior to ovulation, the body produces a large amount of luteinizing hormone (LH) that triggers the release of a ripened egg from the ovary. By detecting the level of LH in urine, the Ovulation Test aids in predicting the time of ovulation and peak fertility. It is during this time that pregnancy is most likely to occur.

At-home ovulation test to identify your most fertile period.
