well, those aren't true implantation dips. An implantation dip is caused by a rush of estrogen as the blastocyst is enveloped into the uterus. Early drops(before 6dpo) are from just a surge of estrogen that can occur from the fertilized egg sending out chemicals, or just normally without a fertilized egg for some. I had ewcm through 3dpo and a touch of it on 5 dpo as well. I have had really high estrogen this cycle I would guess. No clue why. Totally unusual for me, but is why I ovulated so early.
It also could be why I may have dropped two eggs
We shall see in a few more days. My Lp is generally only 10-12 days.