Just seen this online for 5 day transfer....
One day past: The blastocyst begins to hatch out of its shell
Two days past: The blastocyst continues to hatch out of its shell and begins to attach itself to the uterus
Three days past: The blastocyst attaches deeper into the uterine lining, beginning implantation
Four days past: Implantation continues
Five days past: Implantation is complete, cells that will eventually become the placenta and fetus have begun to develop
Six days past: Human chorionic gonadotropin (hCG) starts to enter the blood stream
Seven days past: Fetal development continues and hCG continues to be secreted
Eight days past: Fetal development continues and hCG continues to be secreted
Nine days past: Levels of hCG are now high enough to detect a pregnancy
One day past: The blastocyst begins to hatch out of its shell
Two days past: The blastocyst continues to hatch out of its shell and begins to attach itself to the uterus
Three days past: The blastocyst attaches deeper into the uterine lining, beginning implantation
Four days past: Implantation continues
Five days past: Implantation is complete, cells that will eventually become the placenta and fetus have begun to develop
Six days past: Human chorionic gonadotropin (hCG) starts to enter the blood stream
Seven days past: Fetal development continues and hCG continues to be secreted
Eight days past: Fetal development continues and hCG continues to be secreted
Nine days past: Levels of hCG are now high enough to detect a pregnancy