It usually takes 7~10 days for the fertilized egg to be deposited. Sperm and egg usually combine in the fallopian tube to form a fertilized egg, which then has to move from the fallopian tube to the uterine cavity, a process that takes about 6~7 days, while the fertilized egg begins to develop into a multicellular entity shaped like a mulberry, called a mulberry embryo. It is only when the fertilized egg reaches the uterine cavity that it begins to enter the endometrium, a process called implantation or implantation, which takes about 3 to 4 days. Therefore, the entire process from the union of the fertilized egg to its final implantation in the endometrium takes about 7 to 10 days. After implantation, the trophoblast cells in the fertilized egg will start to secrete HCG (human chorionic gonadotropin), and at this time, checking the HCG in the blood or urine can indirectly determine whether or not you are pregnant. Generally, the fertilized egg does not have any feeling when it is implanted; and before the implantation of the fertilized egg, the level of HCG is too low to detect whether it is pregnant or not. If you have any other questions, it is recommended that you consult a medical professional for guidance.