What is the reason why menstruation is delayed 15 days and breast pain hasn't come yet?

First of all, ensure the quality of test paper and use morning urine. When pregnancy is completely ruled out, there is another possibility, that is, there is no contraception during sexual life, and the psychological stress caused will also affect the physiological reaction. Signs of false pregnancy. It is normal for women to have breast pain before menstruation. And unreasonable diet and irregular bedtime can also lead to irregular menstruation. Go to a regular hospital for a detailed examination. I wish you the best of health! I hope my answer is helpful to you.