The journey of the egg starts when the follicle is mature. The egg is released and travels through the fallopian tube. At this stage the egg gets fertilized. It will take usually 2 to 3 days to reach the uterus wall were implantation occurs.
At this time, you might experience some spotting due to the implantation. The cervical mucus gets thicker and stickier to protect the birth canal from any infection. you might not know that you are pregnant. If you are planning your pregnancy, your baby, at this time is just a tiny sparkle in your eyes.