When is the first day of menstruation and ovulation?

First, we need to understand what a menstrual cycle is. The menstrual cycle refers to the time it takes for a woman’s eggs to be released from the ovaries and enter the fallopian tubes to await fertilization. Typically, a menstrual cycle lasts 28 days, but it may be longer or shorter in some people. Generally speaking, in a woman's menstrual cycle, the time when eggs are released from the ovaries is on the 14th day of the woman's menstrual cycle. Therefore, if you want to know your menstrual cycle, you can start recording your cycle on the first day of menstruation next month, and then calculate your menstrual cycle and the time when eggs are released from the ovaries.

Next, we need to know how to calculate our ovulation period. To calculate your ovulation period, you generally need to combine the menstrual cycle with the time when eggs are released from the ovaries.