What does the 16mm mean?

First of all, the endometrium 16 mm belongs to endometrial thickening, we need to see whether menstruation has been postponed, whether there is no protective measures of sexual life, if there is, then first consider whether pregnancy caused by endometrial thickening, need to go to the hospital to do blood tests, hcg values, combined with B-ultrasound results to determine whether pregnant. After exclusion of pregnancy, under normal circumstances, the endometrium in a centimeter or so will come to menstruation, more than a centimeter or not, suggesting abnormal thickening of the endometrium, may be accompanied by more bleeding, irregular menstruation and other symptoms.