How to calculate ovulation for women with irregular menstrual cycles

This article is professionally consulted with Doctor Trinh Ngoc Lam - Obstetrician and Gynecologist - Department of Obstetrics and Gynecology - Vinmec Phu Quoc International General Hospital.

Some women with irregular menstrual cycles or menstrual irregularities will find it difficult to calculate the day of ovulation. So for these cases, how to calculate ovulation accurately?

We usually take the common menstrual cycle of 28 days to calculate. Accordingly, the time of ovulation will fall on day 14 - counting down from the first day of the next period. And the time from day 11 to day 16 is the fertile period. In which days 13-15 of the cycle are the most fertile time of the cycle. Of course, in the condition that women have normal reproductive functions and do not use any contraception.

The first day of menstruation is counted as the first day of bleeding. Before there may be a few drops of blood, that day can be omitted, no need to count. Many women still mistakenly believe that the first day of a new period is the first day of a new period, which leads to the calculation of the ovulation date that is easily mistaken.

If the 32-day cycle is fixed, the fertile ovulation time will also be fixed accordingly. Cycles of more than 28 days may apply the speculative formula. That is, for every extra day, the fertile day will add one more day. In contrast to women with a menstrual cycle shorter than 28 days, the fertile day is subtracted by 1. For example, it is easier to understand that if the menstrual cycle is 32 days, the fertile time will be on day 15 = 11 + 4 until day 20 = 16 + 4, and ovulation may fall on day 18 = 14 + 4 of the cycle.

For the menstrual cycle is usually 26-30 days, you have to calculate 2 fertile periods. One is the shortest cycle, the other is the longest cycle then combine these 2 cycles together. Accordingly, with a 26-day cycle, the fertile time falls on the 9th to 14th day of the cycle. In a 30-day cycle, conception is from day 13 to day 18 of the cycle. Combining these two cycles, your fertile time is on days 9 to 18 and ovulation will fall on days 12-16 of your cycle.
If the cycle is completely irregular, often disrupted, it is impossible to predict the day of ovulation. Women with irregular menstrual cycles need to see a doctor to check the cause of not ovulating first and take measures to regulate menstrual cycles.

The advice for couples to increase the possibility of conceiving is to have couple activities with a frequency of 2 times / week or 3 times / week. Note that having sex every day does not increase the probability of conception. This also has the opposite effect of reducing sperm count, making the body tired. The fertile period with a 28-day cycle is between 13 and 15, so this period needs to be done 1-2 times to improve the chances of conception. If you only have sex once a week or less, chances are you've missed the most fertile period.

The husband should avoid exposing the genitals to high and hot temperatures Reduce or completely avoid massage, bath, sauna, limit vigorous exercise, ride a bicycle The wife should pay attention to the change Physiologically, entering the fertile period, the amount of vaginal discharge increases much, and at the same time increases sexual desire. After the husband and wife activities should lie on their back for 10-15 minutes, avoid contact with chemicals. Need to treat diseases about the vagina before planning a pregnancy Calculating the exact date of ovulation will help increase the chances of conception, especially for women with irregular menstrual cycles. Hope the above calculation will help you to conceive more easily. If you need to visit and consult a specialist, please book an appointment on the website for service.