The time to implantation after IVF transfer is mainly related to the degree of development of the transferred embryos, which usually occurs 2-5 days after transfer. IVF is the process of in vitro fertilization followed by the transfer of embryos to the mother to conceive a fetus. After transfer, similar to normal conception, the embryo undergoes the process of implantation and secretes HCG hormone after implantation. It is normal for fresh embryos to come to bed about 2-3 days after transfer and for frozen embryos to come to bed about 3-5 days after transfer and may be delayed for a few days depending on the body type. It is usually recommended to have a blood test for HCG at the hospital 14 days after the transfer to determine if conception is normal. The operation process of IVF is very complicated and the preliminary preparations are tedious, so you should know the relevant details in advance, cooperate with the doctor and keep a good attitude to avoid excessive stress affecting the implantation.