After the woman doing IVF retrieves her eggs, at the same time the man needs to retrieve sperm and the two will be formed into a fertilized egg in the laboratory. After three days if the endometrial thickness and morphology is suitable for transfer, the embryos can be transferred for a fresh cycle. If the couple’s condition is not suitable for embryo transfer, the embryos can be frozen and the frozen embryos can be transferred in the next cycle. After the egg retrieval procedure, there may be mild abdominal pain, lower back soreness and other discomforts, and the ovaries will increase in size compared to usual, so women must pay attention to rest and refrain from strenuous activities to prevent ovarian torsion. If there is sudden severe abdominal pain, fever, increased vaginal bleeding, etc., you must go to the hospital in time. In addition, when doing IVF, you must strictly follow the doctor’s instructions, and if there is any abnormality, you need to consult a doctor for examination in time.