Ovulation takes place when the ovary releases a mature egg. The menstruation cycle encompasses two phases. The first or follicular phase starts on the first day of the menstruation cycle and ends on ovulation day. The second is called the luteal phase which begins after ovulation day and ends before your next period starts.

The follicular phase’s duration depends on many factors and varies from woman to woman. But the luteal phase remains the same, which is about 14 days. To calculate the ovulation period and estimate your ovulation day, use the ovulation calendar.

How do you calculate your ovulation period?

Each cycle has specific days where the chances of conception are maximum. If sperm can meet the mature egg released on the ovulation day, the chances of conception are high. Before going to the fertility centre for treatment, here are a few things to understand:

Sperm active duration

Sperm sticks in the fallopian tubes for up to three to six days.

Egg active duration

The egg survives in the fallopian tube only for 12 to 24 hours.

Considering the above, the fertility window is four days before ovulation, on the day of ovulation, and one day after ovulation, which sums up to six days. The best days when you are fertile are two days before ovulation day and on the day of ovulation. Note them while using the ovulation date calculator.

Examples

In an average menstruation cycle, which is of 28 days, you ovulate on day 14. The best fertility period is during the 12th, 13th, and 14th day. Similarly, for the average menstruation cycle of 35 days, the ovulation day is day 21. The best fertility period is on the 19th, 20th, and 21st day. For an average menstruation cycle of 21 days, Day 7 is the ovulation day. The best fertility period is during days 5, 6, and 7.

Since most women have irregular menstruation cycles, it is hard to estimate the ovulation day on the ovulation calculator. It is good to indulge in sexual contact every two to three days during ovulation to increase the chances of pregnancy.

How do you calculate average cycle length?

A cycle length is the number of days between two periods and is calculated using the first day of your period two months ago and the first day of your last period. For example, if in October, your period started on the 10th and in November, they began on the 6th, the cycle length is 28 days. The average cycle length is important while undergoing IVF treatment.

Estimating your cycle length is essential to understand the ovulation days. It is one of the inputs asked by the fertility calculator. As most women encounter irregular cycles, work out an average cycle length by tracking at least three menstrual cycles.

Conclusion

The ovulation calculator provides your approximate ovulation period. There are increased chances of getting pregnant during ovulation days. The results depend majorly on the accuracy of the start date of your cycle and average cycle length.