Ovulation refers to the 14th day of a woman’s menstrual cycle and is also the period when women are most fertile. However, for many women, calculating ovulation is not an easy task because of several factors that may affect a woman's menstrual cycle and fertility.

Therefore, it is impossible to determine how many days after menstruation is ovulation. However, there are ways to predict when a woman will ovulate. For example, you can observe your menstrual cycle to see if it is stable between 28 and 30 days. You can also monitor your sexual desire to see if it is stronger during ovulation.

Additionally, some predictive tools are available, such as thermometers and calendars. Thermometers can measure a woman's body temperature and predict her ovulation period. A calendar can help a woman predict her menstrual cycle and alert her to possible ovulation dates.

Calculating ovulation is no easy task, but there are a few ways women can better protect their fertility.