hapa kuna maneno mengi ya kitaalam katika kulielezea hili swala ambayo hutayaelewa,so nenda kwa dactar atakusaidia zaidi,pitia hapaimplantation bleeding occurs during implantation of the egg cell . It occurs towards the end of implantation process.Trophoblast is a highly specialized tissue, which develops from the fertilized egg and surrounds the egg. It attaches the egg to the endometrium and as it is continuously growing it invades the endometrium,so as it eats its way into the endometrium it pulls the egg into the endometrium. The trophoblast also invades the mothers blood vessels and divert her blood to cavities inside the trophoblast. These cavitiesare than filled by maternalblood becoming blood lakes, and most of these lakes are connected. The trophoblast on the outer surface of the egg are thinner and slower growing but also contains cavities that are connectedto other deeper cavities. Some of these outer cavities communicate or open into uterine cavity. Blood that leaks from these cavities are causing implantation bleeding , and it occurs shortly before the egg is completely implanted and completely covered with endometrium.Nenda kamuone dactar