The normal value of estradiol in one month of pregnancy is usually between 100-300ng/l. The normal value of estrogen after pregnancy is different for each pregnant woman, and the range of fluctuation will be relatively large, so you can not rely solely on the value of estradiol to determine whether the pregnancy is normal or not. The hcg level is more sensitive in predicting whether a pregnancy is normal or not in a new pregnancy, and in the early stages of pregnancy the hcg level should be doubled every other day. Therefore, in the first month of pregnancy, it should be combined with other hormone levels, such as hcg and progesterone, and the symptoms of the pregnant woman to determine whether the pregnancy is normal or not. After 6 weeks of pregnancy, the development of the gestational sac should also be observed through ultrasound, such as whether there is fetal heart buds and yolk sac, combined with the hormone content to determine whether the pregnancy is normal.