Fresh embryos generally implant in about 3~5 days after transfer, the latest implantation is about 7 days, the implantation time depends on the length of time of raising embryos in vitro.
1. If the embryo is kept in vitro for a longer period of time, for example, about 5~6 days, after the embryo is transferred to the uterine cavity, the embryo will be implanted earlier, and it may implant in about 2~3 days.
2. In vitro embryo raising is shorter, for example, in vitro embryo raising is about 3 days to transfer, in this case, after transferring, the embryo still needs to develop before it can be implanted in the uterine cavity, usually in about 4~5 days, and the latest is not more than seven days.
After the fresh embryo transfer, HCG rises faster, and it is best to go to the hospital about 10-15 days after the transfer to take a blood test for HCG to confirm whether you are pregnant or not.