Physical changes and symptoms after ovulation Ovulation is an important part of the female reproductive cycle and one of the key periods of the menstrual cycle. During the ovulation period, the female body will undergo a series of changes and symptoms, which will be elaborated on in the following four aspects. 1. Changes in sex hormone levels Ovulation is due to the maturation of follicles in the ovary and the release of eggs from the ovary. This process is regulated by sex hormones. Estrogen levels in the ovaries before ovulation