Implantation usually occurs 1.5-2 weeks after conception (when sperm meets egg). The fertilized egg then travels through the fallopian tube and attaches to the uterine wall. It is thought that this small amount of blood is a result of this "implantation".

Our question is: how would you describe the difference between implantation bleeding and a regular period? This is a very important topic and can cause some serious anxiety when you don't know one way or another.