The increase in follicles during ovulation is a very important physiological phenomenon, which marks that women have entered the best state for pregnancy. During ovulation, follicles in the ovary begin to develop and gradually grow. These follicles are the site of eggs, and if they mature and are successfully expelled, it is possible to form a fertilized egg after fertilization.

The size and number of these follicles depends on the woman's physical condition and menstrual cycle. Generally speaking, if a woman's menstrual cycle is 28 days, ovulation will begin on the 14th day of the menstrual cycle and end on the 16th day. If a woman's menstrual cycle is shorter, her ovulation period will be earlier, and vice versa.

In addition to ovulation, there are other factors that affect follicle growth and development. For example, hormone levels in a woman's body, diet, exercise and rest, etc., may all affect the growth and maturation of eggs.

Therefore, if you want to get pregnant, it is best to have sexual intercourse during the ovulation period. In this way, it is possible for the female egg to meet the sperm, form a fertilized egg, and lead to a successful pregnancy. If a woman does not have intercourse during her ovulation period, she may miss her best chance of getting pregnant.