An in vitro blood reference value higher than 10u/L can confirm pregnancy. When you go to the hospital for blood test about 14 days after the embryo transfer, you can usually reach a value of about 200-300 to be sure that you are pregnant. In case of twin or multiple pregnancies, the value may also be higher. After the transfer is confirmed, you will need to rest in bed. The HCG will gradually increase as the pregnancy date increases. It is recommended to have a regular blood test to see the development of the gestational sac. Under normal circumstances, if the fetus is developing normally, the HCG will double every other day. If the HCG value is low or not doubled, it is considered that there is miscarriage or the gestational sac is underdeveloped, and progesterone can be used reasonably under the guidance of the doctor to preserve the fetus. It is also recommended that regular ultrasound examination can rule out ectopic pregnancy and determine the development of the fetus, so don’t worry too much if the fetus is developing normally. It is also recommended to eat more high-protein food and vegetables and fruits to promote fetal development, prevent constipation during pregnancy and prevent miscarriage.