Menstruation delayed 7 days intermittent pain in the abdomen as well as having chest swelling is considered to be related to menstrual precursors, pregnancy, gynecological diseases and so on. 1. Menstrual precursors: generally speaking, before menstruation, there will also be a change in hormone levels, resulting in the phenomenon of chest swelling and abdominal pain, generally known as premenstrual syndrome. 2. Pregnancy: If there is a delay in menstruation and you have had sex without contraception, then this phenomenon is mostly considered to be related to pregnancy, and you need to check HCG in time to determine whether you are pregnant. 3. Gynecological diseases: delayed menstruation for 7 days, abdominal pain, chest swelling, may be breast hyperplasia, mastitis caused by chest pain, to pelvic inflammation and other gynecological inflammation stimulation caused by abdominal pain. Only chest pain, abdominal pain, menstrual delay can not determine which disease, it is recommended to go to the hospital in a timely manner for relevant examinations, by the doctor’s diagnosis and treatment.