Question: how many days after fertilization does it take for the zygote to reach the uterus?
Answer: The fertilized egg starts growing fast, dividing into many cells. It leaves the fallopian tube and enters the uterus 3 to 4 days after fertilization. In rare cases, the fertilized egg attaches to the fallopian tube. This is called a tubal pregnancy or ectopic pregnancy and is a danger to the mother.