Many patients feel that the embryos are stationary after the transfer into the uterine cavity, so they absolutely rest in bed, fearing that the embryos will take up residence outside the uterus, but in fact a series of delicate processes occur during the 13 days between the transfer into the uterine cavity and the confirmation of pregnancy. 1. Embryos that have been transferred into the uterine cavity are not stationary, they have not taken root and settled in the uterus for 1-2 days after transfer, they just roam around the uterus to fully absorb nutrients and continue to divide, becoming a blastocyst with a head and tail and cell division. During this process, if the uterine environment is not good, the embryos may swim outside the uterus, such as the fallopian tubes and ovaries. Therefore, just because you are resting in bed at this time does not mean that the embryo can stay still. In the early stage of transplantation, the estrogen in the body is still at a high level after ovulation and the blood is in a high coagulation state, so absolute bed rest may increase the risk of thrombosis. 2. 3-7 days after the transfer, the blastocyst cells will grow a small tail-like drill, they will find a suitable and comfortable position in the uterus to drill into the uterine wall, and the embryo will finish the implantation, so the patient should try not to do strenuous activities during this period, and normal life is not affected. 3. 8 days after the transplantation, the embryos start to secrete HCG in the uterus, and later they secrete more and more HCG, so they finish the most important step in their life and gradually send the signal of pregnancy to the mother. So after 12 days after the transfer we can use early pregnancy test paper to measure the urine HCG or draw blood to check the HCG level to know the pregnancy status. At this time, as long as there is no vaginal bleeding and abdominal pain and other symptoms of pre-eclampsia, you can usually go to work normally as normal pregnant women. Therefore, after the transplantation, patients should try to keep a happy mood, avoid excessive tension and anxiety, and let the body be in a completely relaxed state to make the baby develop healthily.