What is ovulatory period? Ovulation is the most important part of a woman\’s menstrual cycle. It refers to the process in which mature eggs in the ovaries are released from the ovaries and enter the uterus through the fallopian tubes. Ovulation refers to the most fertile time in the menstrual cycle, which usually occurs around the 14th day of the menstrual cycle. What are the methods for calculating ovulation? 1. Obesity index method: Obese women have relatively high levels of sex hormones, so their cycles are relatively short and their ovulation period will be relatively early. Here we can determine whether we are obese by calculating BMI. The BMI calculation formula is: BMI=body