Chest pain is not necessarily menstruation, because the early stages of pregnancy due to the increase in blood HCG, estrogen and progesterone levels, can also cause chest pain, breast volume increases, nipple coloring deepening phenomenon, so chest pain may be pregnant. Some women’s chest pain is about to menstruate, especially women with breast hyperplasia, in the pre-menstrual period of the body congestion easily caused by chest pain. However, there is no absolute relationship between breast swelling and menstruation, nor is there an absolute relationship with pregnancy, so it is more accurate to check blood HCG and ultrasound in the hospital to determine whether you are pregnant. If your period is delayed for more than 7 days and you experience breast tenderness, you can also buy a pregnancy test to see if you are pregnant.