Which day of menstruation is ovulation?

Generally speaking, a woman's menstrual cycle is 28 days, so starting from the first day of the menstrual cycle, every 4 days is a cycle, and the 14th day is the ovulation period. However, this method doesn't work for all women, as some women have shorter or longer menstrual cycles, or their cycles aren't completely accurate.

In addition, there are other ways to predict a woman's ovulation period. For example, women can predict ovulation by measuring their body temperature. On the 14th day of the menstrual cycle, a woman's body temperature will rise by 0.3-0.5 degrees Celsius, which is usually a sign of ovulation. In addition, women can also predict ovulation by observing changes in vaginal secretions. During ovulation, a woman’s vaginal secretions will increase, become darker in color, and appear clear and transparent.

While these methods are not guaranteed to be 100% accurate, for most women they can provide some useful predictions. If a woman is unsure about her menstrual cycle or unable to predict when she will ovulate, it is recommended to consult a doctor or health care professional.