I just finished my period and now am on CD6. I've been using the same ovulation test holder from Clear Blue since last month because it didn't show an LH surge yet (btw, had a biochemical pregnancy diagnosed by me RE during that month). I took a store brand OPK and the same Clear blue with FMU and the store brand shows positive LH surge and the Clear Blue still showed a flashing smiley face today. Can you really ovulate on CD 6? Could that lead to successful implantation if the egg is fertilized? Seems like the egg would be immature, but not sure the body releases immature eggs at ovulation?