Aunt refers to menstruation. Menstrual back pain and chest pain and swelling, most of the normal phenomenon, will not affect the pregnancy. A few pathological causes such as uterine fibroids, adenomyosis, pelvic inflammatory disease, etc., caused by back pain and chest pain and swelling, may affect pregnancy. In some women, the onset of menstruation, due to pelvic congestion, increased levels of prostaglandins and other reasons, causing menstrual lumbosacral drop feeling, uterine contraction pain and other symptoms. Breast swelling and pain during menstruation due to changes in hormone levels is a normal physiological phenomenon and most will not affect pregnancy. When the back pain during menstruation is obvious, it may also be caused by uterine fibroids, adenomyosis, pelvic inflammatory disease and other pathological reasons, which may affect the pregnancy, such as leading to infertility, miscarriage, cessation of embryonic development, ectopic pregnancy and other adverse pregnancy outcomes. Menstrual back pain chest pain and swelling may also be other reasons, please consult a regular hospital, under the guidance of a professional doctor to identify the causes and timely treatment to avoid adverse consequences.