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# Irregular menstrual cycle fertile days calculator

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Although it is a little difficult to know exactly which days are fertile in women who have irregular menstruation, it is possible to have an idea of ​​which days may be the most fertile of the month, taking into account the last 3 menstrual cycles.

For this, it is important that the woman writes down in a calendar the day of each cycle in which the menstruation occurred, in order to know how many days in average have each cycle and to be able to calculate the most fertile days.

If your menstrual cycle is irregular, you must take an average of the last 3 months of how many days were the duration of your menstrual cycle, and then the first month your cycle lasted 28 days, the second month 30 and the third month 26, then must add 28 + 30 +26 = 84 / 3 months = 28 days (this being the duration of the period that must be entered in the calculator).

Next, put the data in the calculator and know when your fertile period will be:

However, it is important to mention that this method is an estimation.

## How to calculate fertile days

The calculation of the fertile days in the irregular cycle can be more complicated, as ovulation and menstruation can occur in different periods and, therefore, it is important to consult a gynecologist for a more accurate assessment.

In spite of this, some popular calculation forms that can help to have an idea of ​​the fertile period, but they should not be considered as absolute truths:

### 1. Average in the last 3 months

To calculate the fertile period or the fertile days, the woman must consider the last 3 cycles and note the days in which the first day of menstruation occurred, determine the interval between these days and calculate the average between them.

For example, if the time interval between 3 menstruations was 33 days, 37 days and 35 days, this gives an average of 35 days, which will be the average duration of the menstrual cycle (for this, just sum the number of days of the 3 y cycles divide between 3).

After this, at 35 there are 14 days left, which is equal to 21, which means that ovulation occurs at 21 days. In these cases, between one menstruation and another, the most fertile days will be 3 days before and 3 days after ovulation, and then between the 18th and 24th after the first day of menstruation.

### 2. Annual cycle

In this case, the duration of the cycle must be registered every month, so that it is possible, after 1 year, to identify the longest cycle and the shortest cycle. The continuation, if it must remain 18 to the longest cycle and 11 to the shortest cycle.

For example, the longest cycle lasts 36 days and the shortest 20 days, therefore, it should be 36 – 18 = 18 and 20 – 11 = 9, which is indicative that the fertile period must be between the day 9 and 18 of the cycle. However, since the cycle is irregular, this period can be variable.

## What to do if you want to be embarrassed

If the calendar method doesn’t work and you want to be embarrassed, there are some ovulation tips that can be purchased from pharmacies, which will help you identify which ones are the most fertile days when you should have intimate contact to increase the chances of an embarrassment. . See how the ovulation test works.

Another possibility is to have sexual intercourse for a minimum of 3 to 3 days throughout the month, especially on days when you can identify the signs of a fertile period, such as changes in body temperature, the presence of sex in the vagina and an increase in the libido, for example. Know more about these signs that appear during this period.

Watch the video for more on the fertile period:

## How to protect yourself and avoid embarrassment

For those who have an irregular cycle, the best way to avoid an embarrassment in the desired is through the intake of contraceptive pills, the ones that help to regulate the days of the menstrual cycle, or through the use of condoms that in addition to protecting against embarassment , will protect against sexually transmitted infections.

The method of interrupted intercourse in women with an irregular menstrual cycle could increase the risk of embarrassment, because to use this method it is necessary to know how your menstrual cycle works. See more about this method.

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Consult a Doctor | Translated by User2937

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