The menstrual cycle is 28 days, how to calculate ovulation at this time?

First, we need to understand how a woman’s menstrual cycle is calculated. Generally, a woman's menstrual cycle can be divided into four phases: the first seven days (danger period), the middle seven days and the last seven days. During the seven days in the middle of the cycle, a woman's eggs mature and are released, so this phase is dangerous.

For women with a menstrual cycle of 28 days, we can calculate ovulation based on the following formula:

Risk period = (number of days in cycle - 1) × 7 days

For example, if a woman's cycle lasts 28 days, then the danger period is:

Danger period = (28 - 1) × 7 days = 20 days

Therefore, if the period is 28 days, then during the danger period is the period when the eggs are laid.

In this article, we explain how to calculate ovulation for women with a 28-day menstrual cycle. This method can help women better understand their health conditions and take appropriate measures to protect their health. If you have any other questions, please feel free to contact us.