Detailed explanation of the calculation method of women’s safe period
The female menstrual cycle is divided into menstrual phase, ovulation phase and luteal phase. During the safe period, it is difficult for women to get pregnant, but during the dangerous period, it is easy for contraceptive failure. Therefore, it is important to understand your own safe period. This article will introduce in detail the calculation method of female safe period.
Menstrual periods and cycles
A woman\’s menstrual period generally lasts 28 days, but the cycle may vary. In order to calculate the safe period, you first need to know your average menstrual cycle. The specific method is to record the start and end dates of menstruation for several months, and take the average as your menstrual cycle.
How to calculate menstrual period
Menstrual periods are calculated from the first day of menstruation to the day before the next menstrual period. That is, the menstrual period in a month = the day when the next menstruation starts – the day when the last menstruation started.
Period calculation method
Cycles are calculated from the first day of menstruation to the last day before the next menstrual period. That is, one month\’s cycle = the day when the next menstruation begins – the day when the previous menstruation begins.
How to calculate ovulation period
Ovulation is an important time point for women to conceive, usually around the 14th day of the menstrual cycle. The total time before and after ovulation is about 5 days. However, due to differences in women\’s menstrual cycles and cycle lengths, the calculation of ovulation is also different.
The simplest calculation method
The simplest calculation method is to assume that the menstrual cycle is 28 days and the ovulation period is half of the menstrual cycle, which is 14 days. However, this method is not completely accurate, so a woman\’s own menstrual cycle needs to be taken into account to determine the exact day of ovulation.
Basal body temperature calculation method
By recording changes in basal body temperature, ovulation can also be calculated. Basal body temperature is the body temperature measured for the first time in the morning when a woman is at rest. Before ovulation, the body temperature is generally maintained below 36.5°C, while after ovulation it will increase by 0.2-0.5°C. Therefore, you can determine your ovulation period by recording changes in body temperature.
Safety period calculation method
The safe period refers to the time outside a woman’s ovulation period. Because ovulation is the peak period of female fertilization, the time outside of ovulation is a safe period. The safe period for most women is between 8 and 19 days of the menstrual cycle.
The simplest calculation method
The simplest way is to calculate it through the menstrual cycle. If the menstrual cycle is 28 days, the safe period is 8 to 19 days.
Gradual method
Another approach is the incremental approach. First, subtract 18 from the menstrual cycle length in one month to get the earliest safe period in one month. Then, subtract 11 from the cycle length of one month to get the minimum safe period of one month.
Compound body temperature calculation method
The composite body temperature calculation method is a method that records the basal body temperature and calculates the safe period based on the ovulation period. A woman\’s body temperature is lower before ovulation and higher after ovulation. therefore, record your menstrual cycle while recording your body temperature, and you can calculate the safe period.
Calculation method of dangerous period
The risk period is usually around ovulation. During the dangerous period, women are more likely to become pregnant. Therefore, better contraceptive measures are needed during this time period.
Calculate after determining ovulation period
First, you need to determine your ovulation period, and then the 5 days before and after the ovulation period are all dangerous periods. Therefore, within 10 days before and after ovulation, more effective contraceptive measures need to be used to avoid the risk of pregnancy.
Use safe methods such as condoms
In addition to the above calculation methods, women should also take some safer contraceptive measures, such as using condoms, oral contraceptives and other safe methods that suit them.
Combine multiple methods to identify dangerous periods
In addition to using a single method to calculate the dangerous period, you can combine multiple methods to identify your own dangerous period. For example, combining the progressive method and the basal body temperature calculation method can calculate the risk period more accurately.
Summary
There are many ways to calculate a woman\’s safe period and dangerous period, but no matter which method is used, the most important thing is to understand her menstrual cycle and body changes. Only by knowing more about your body can you better predict the safe and dangerous periods and choose the appropriate contraceptive method.
