Nearly positive OPK

[itwasawendys]

I am 7 days from my first positive OPK so about 6DPO. My tests stayed positive for around 3 days and I've just took another and it looks like this... not quite positive but has a dark line and is darker in person. Is it common to have such a dark OPK around 6DPO?

Thanks

 

[kaylab22]

Look neg to me

 

[glong88]

As long as second line less dark then main line then it's negative