The botanical gardens, lawns and extensive natural bushland of Kings Park in Perth form a peaceful green oasis right in the very centre of the city. At 4.06km 2, it's the world's biggest inner city park. Kings Park occupies Mount Eliza, one of the highest points in Perth's mostly flat landscape. It soars high above the Swan River and the Perth skyline, with panoramic views to the east from the edge of a steep escarpment.
When a fertilized egg does implant, a hormone called human chorionic gonadotropin (hCG) begins to be produced in the uterus. This is the hormone that a pregnancy test measures. It prevents the uterine lining from being shed, so the woman does not have a period.
However, early and late implantation cases are not rare. Most frequently the fertilized egg successfully attaches to the uterine wall on the 8-10th DAO. According to the statistics, implantation on the 9th day after ovulation occurs in 37% of women. Other days are less fertile. However, in general 2 ovum cells out of 3 implant during other days within the mentioned time interval.