Nipple pain is not all caused by ovulation, but the symptoms of nipple pain during ovulation are normal physiological phenomena. Because of the hormonal changes in the body of women during ovulation, the blood vessels in the breast area will bleed and expand, resulting in enlarged nipples, increased sensitivity, and a certain degree of pain. When nipple pain occurs, it is recommended to wear loose cotton underwear to prevent nipple stimulation, and also pay attention to calm emotions in life, avoiding exertion and staying up late. If the symptoms of nipple pain persist, it is recommended to go to the hospital for examination to rule out whether it is caused by pathological diseases, because breast hyperplasia, benign fibroadenoma of the breast, malignant tumors can cause women to experience nipple pain symptoms, so when nipple pain should not be ignored.