What Are the Safe Days?
Apr 21, 2021
Source: Cainiu Health
Dr. Deng Xuanbi
Introduction
Which days are considered the “safe period”? The safe period is divided into the pre-ovulatory safe period and the post-ovulatory safe period.
The pre-ovulatory safe period refers to the time from the day menstruation ends to three days before the onset of ovulation.
The post-ovulatory safe period refers to the time from the day after ovulation ends until the day before the next menstrual period begins.
Generally, the post-ovulatory safe period is safer than the pre-ovulatory safe period.
Note, however, that the “safe period” is not absolutely safe.
The “safe period” refers to a time during which a woman’s probability of becoming pregnant through sexual intercourse is relatively low. The safe period varies among individuals and depends on each person’s longest and shortest menstrual cycles, as well as the onset date of menstruation.The safe period is further divided into the pre-ovulatory safe period and the post-ovulatory safe period.
A healthy woman of childbearing age typically experiences menstruation approximately every 28 days. The interval from the first day of one menstrual period to the first day of the next is defined as one menstrual cycle. From a contraceptive perspective, the menstrual cycle is divided into three phases: the menstrual phase, the ovulatory phase, and the safe period.
The pre-ovulatory safe period spans from the day following the end of menstruation to three days before the onset of ovulation.The post-ovulatory safe period extends from the day after ovulation ends to the day before the next menstrual period begins.Generally speaking, the post-ovulatory safe period is considered safer than the pre-ovulatory safe period.
It should be noted that the safe period is not absolutely reliable. Ovulation may occasionally occur earlier or later than expected. Therefore, identifying the safe period can only reduce—but not eliminate—the risk of pregnancy and should not be used as a method of contraception.
