you poor thing, you must be so confused. I *think* its the corpus luteum that creates the HCG level until the placenta is able to take over that function but I have no idea about not having implanted, I dunno if that would create HCG if the blastocyst hasnt implanted I dont want to be awful and upset you but you may be pregnant but things arent dividing how they should be iykwim. With my first bub, HCG level stopped rising properly at 5ish weeks but then started going along perfectly at 6.5 weeks, bodies can do such weird things, especially when they are trying to hold on to that bubba! Im no Dr, so as I said, obviously he has ALOT better idea about the implanting and HCG. Hope you get the answers you want soon, hun