On my ovulatin calendar it said that the most day I will fertile is on the 4,5,6,7is the day I was most to be fertile day an the calendar on the 12 is my implantation day so what that mean.

Implantation is when the fertilized egg travels down the fallopian tubes and settles in the uterus. It implants itself in one wall of the uterus, and some women can actually feel that implantation as a pain that lasts a couple of hours.