Menstruation delay lower abdomen dull ache how to return a responsibility

Menstruation delay lower abdomen dull pain may be endocrine disorders, or do not pay attention to keep warm lead to abdominal cold, qi stagnation blood stasis, or take drugs, eat cold food lead to menstruation delay, now menstruation is about to come but there are dysmenorrhea performance, can also consider pregnancy, pregnancy uterus enlargement, pelvic congestion pain discomfort.