Curious if this is normal

I've only used OPKs for two months on this 6th month journey of TTC. Usually I don't start testing till CD 11 like the tests say to but this month I decided to go all out and got enough tests to start earlier and go longer. So the last two times I never got a strong second line so I just went with the darkest point which would fall late in my cycle ( like CD 17-20). Today is CD 6 (the day after AF left) and this is what I got. I expected to have little to no line at all. Have I been missing my O the past few month by testing late or is this dark of a line this early on normal? PS I would call this a negative but I'm also relatively new to OPKs so feel free to correct me. :)