Due to the different physical conditions of each woman, not all women will experience chest pain during ovulation. Only a small number of women, who are more sensitive to estrogen and progesterone in their bodies, will experience breast swelling and pain due to the stimulation of high levels of estrogen during ovulation. After the ovulation period is over, due to the sudden drop of estrogen, the breast swelling and pain will be relieved naturally. In the week before menstruation, estrogen levels rise again and progesterone is produced. With the combined stimulation of estrogen and progesterone, breast swelling and pain may reappear and last until the onset of menstruation. After menstruation, the symptoms will be relieved naturally again and no treatment is needed. Some women who have breast hyperplasia or breast nodules may also experience breast tenderness during ovulation.