Picture of embryo transfer on the fourth day

As we all know, in vitro fertilization helps women get pregnant. Many women cannot get pregnant normally due to some physical reasons. After the test tube embryo is cultivated through in vitro fertilization and then transplanted into the woman's body, it is just like the stage of normal pregnancy, waiting for the successful implantation of the fertilized egg. Whether it is in vitro fertilization or normal pregnancy, the process of fertilized egg implantation may be successful or unsuccessful.

So what is the test tube embryo doing on the fourth day after transplantation? We all know that after the test tube is transplanted into the woman's body, the embryo usually begins to implant within 7 days. Different test tube embryos have different times when they begin to implant. It takes two days for fresh embryos to implant after being transferred into the woman's body; while after the embryo is transferred into the woman's body, it will begin to implant on the same day; if it is a frozen embryo, then the implantation time will be between 3 and 5 days.

In fact, the time of test tube embryo implantation is not relative. It will be affected by the physical fitness of women and the quality of test tube embryos. However, most test tube embryos begin to implant within 7 days, that is, the embryo implantation begins at the 7th day after transplantation at the latest. Then on the fourth day of transplantation, the test tube embryo may be in the process of embryo implantation, or it may be in the process of embryo growth and development. We need to understand that all test tube embryos must be in the embryonic state before they can begin to implant.

In other words, if the test tube embryo is not an embryo before it is transplanted into the woman's body, then even if the test tube embryo has been transplanted into the woman's body, it must first grow and develop into an embryonic state before the embryo can begin to implant. Therefore, it takes two days for fresh embryo transplantation to begin embryo implantation, and on the fourth day after transplantation the embryo has already dispersed in the uterus, looking for a suitable embryo implantation site. Generally speaking, most test tube embryos have begun to implant on the fourth day after transplantation.

So what are the test tube embryos doing on the fourth day after transplantation? The answer is that they may be dispersing in the uterus to find a suitable place for embryo implantation; they may also be producing embryos during the development period. In fact, it is necessary to clarify whether it is fresh embryo transplantation, embryo transplantation or frozen embryo transplantation. However, whether it is fresh embryo transfer, embryo transfer or frozen embryo transfer, after the fourth day of transfer, if there are no accidents, the test tube embryos should begin to implant. Of course, some test tube embryos are of poor quality and implantation time will be slower.