Is this the start of a positive OPK?

[Amyr123]

So I'm new to these OPKs and this is the darkest line I've had so far I'm on cd19 and I've got no idea if I'll ovulate due to my PCOS but this is my first cycle taking 1700mg metformin a day so fingers crossed! Any advice would be appreciated

 

[PeanutButter]

Opks are difficult to tell with, sometimes I get nearly positive, then it'll go back to nothing next time I pee... couple days later get a blazing positive.
Just do them as often as you can xx