Is pregnancy delayed by 8.2?

Menstruation delay progesterone value 8.2 is not necessarily pregnant, may also be caused by changes in hormone levels, should go to the regular hospital obstetrics to do B ultrasound, blood HCG examination; if the endometrium thickening, and HCG value exceeds 10ng/ml, can determine pregnancy, for pregnant women in the early stages of pregnancy should be timely supplemented with folic acid.