Usually patients start to have early pregnancy reactions about 4 weeks after transplantation, and 2 weeks after transplantation the doctor orders a pregnancy test, and the luteal support medication and estrogen-based medication used after transplantation cannot be stopped after the pregnancy test. Usually, after 2 weeks, the pregnant woman will be ordered to return for an ultrasound to check the condition of the fetus, whether it is in the uterus and whether there is a fetal heartbeat. At this time the blood HCG level will be high, reaching tens of thousands, and an early pregnancy reaction will occur, and the patient may have frequent urination, nausea, vomiting, loss of appetite, drowsiness and fatigue. Of course, there are some patients who have very mild early pregnancy reactions with almost only mild discomfort, which varies from person to person. Generally, early pregnancy reactions will start to appear about 4 weeks after transplantation.