HCG 1800IU/L in 5 weeks of pregnancy is within the normal range of values, whether the embryo development is normal, can not rely on a value to judge, HCG will be doubled every other day and progesterone value is very good, indicating that the embryo development is good. The normal value of HCG in 5 weeks of pregnancy ranges from 1000~50000IU/L, there are differences in HCG in 5 weeks of pregnancy for each woman, and each person’s elevated condition is different, you can’t rely on a numerical value to determine whether the embryo is developing normally, the blood test HCG will gradually increase with time, doubling every 48 hours, and progesterone rises very well, which means that the development of the embryo is good. HCG doubling at 5 weeks of pregnancy is not good, and progesterone rises more slowly, accompanied by vaginal bleeding, abdominal pain and other symptoms, we should consider that it is caused by the poor quality of the embryo or ectopic pregnancy, fetal arrest and other reasons. After pregnancy, regular and good pregnancy obstetric examination, to understand the intrauterine development of the fetus.