How to calculate ovulation if menstruation is irregular

Many female friends have very bad habits in life, which leads to abnormal menstruation, which is very unfavorable for calculating their ovulation period. In case of irregular menstruation, it is recommended to regulate the body for a period of time before calculating the ovulation date, which will be more accurate. During your body's ovulation cycle, your vaginal mucus increases and becomes wetter than normal.

How to calculate ovulation if menstruation is irregular

Method 1:

Calendar method: For women with irregular menstruation, you can calculate based on the menstrual cycle of the past 6-12 months:

The shortest cycle (number of days) - 21 days, and the period before is the pre-safe period.

The longest cycle (number of days) is 10 days, and the period after that is the post-safe period.

For example, the shortest menstrual period is 28 days and the longest is 37 days. The shortest menstrual cycle is subtracted by 21 (28-21=7) and the longest menstrual cycle is subtracted by 10 (37-10=27). Therefore, the 7th to 27th day after the onset of menstruation are all considered the ovulation period.

Method 2:

Observe the cervical mucus: the cervical mucus is often dense in a small quantity, or even with no mucus after the menstruation is over. This is called the "dry period", and it is not easy to get pregnant. In the middle of the menstrual cycle, with endocrine changes, mucus increases and becomes thinner, and vaginal secretions increase, which is called the "wet period".

Near the ovulation period, the mucus is clear, smooth and elastic, like egg white, with high stringiness and not easy to break. The ovulation day is 48 hours before and after the last day of the appearance of this mucus. Therefore, when the vagina feels moist, it is the "fertile period". Therefore, for contraception, you need to wait until it is dry again for three full days and then have sexual intercourse after the fourth night.

Method 3:

Measuring basal body temperature: Women usually ovulate when their basal body temperature rises from low to high before it rises. The three days when the basal body temperature is at an elevated level is the "fertile stage", and the three days after that is the safe period. This method can only indicate that ovulation has occurred, but cannot predict when ovulation will occur.

Measure and record your body temperature after waking up from 6 hours of adequate sleep and before engaging in any activities: Under normal circumstances, the body temperature rises by 0.3℃-0.5℃ after ovulation; if there is no ovulation, the body temperature does not rise and remains low throughout the entire cycle. It is necessary to test repeatedly and connect the points and lines in a chart for analysis. If your lifestyle is irregular, such as night shifts, business trips, insomnia, mood changes, illness, etc., this method cannot be used to determine whether ovulation has occurred.

Reminder: The safe period is not necessarily safe

Zeng Chaoyang reminded that the calendar method (i.e. calculation based on the menstrual cycle) is often unreliable. The time of female ovulation is affected by factors such as the external environment, climate, her own mood, and health status, which may result in delayed or early ovulation, and extra ovulation may also occur. "The rhythm method is not completely safe." The failure rate of contraception during the safe period is about 20%. Relatively speaking, the contraceptive effect of having sex during the safe period after ovulation is more reliable when calculated using the basal body temperature method and cervical mucus method.