Ovulation refers to the date when a woman's egg is released, usually on the 14th day of the menstrual cycle, but the specific date varies depending on individual differences. If you want to get pregnant, it is very important to calculate your ovulation period.

Of course, not everyone's cycle is the same, so if you want to determine your ovulation period, you can use some tools or methods to estimate it. For example, measuring basal body temperature can be used to determine ovulation, as basal body temperature rises around certain dates.

Additionally, you can use some test strips or online tools to determine ovulation. These tools typically show a certain point in a woman's menstrual cycle when an egg is likely to be present, and recommend having sex under these circumstances.

Calculating ovulation does not guarantee pregnancy because many factors can affect pregnancy, such as the woman's physical condition, the man's health, and the quality of sexual intercourse. Therefore, if you want to get pregnant, you should start having sex on the 14th day of the menstrual cycle and maintain regular sex throughout the cycle to ensure pregnancy.