Confused with OPKs different tests, same pee...

[PeanutButter]

Different tests from amazon/ebay... they're all saying different things with the same pee..?
The middle one is even darker now.. other 2 still the same

View attachment 61543

 

[DarcyHodge]

Does two lines mean you are ovulating? And which ones are what? If it's the same pee I would say ones maybe a dud as two are showing the lines xx

 

[PeanutButter]

The line on the left has to be darker or same colour as the control line, the middle one is way darker, top one has faded but it was nearly the same and bottom one is jus negative xx

 

[scn]

Opks have different sensitivities just like hpts

 

[PeanutButter]

I'm getting left side pain, do the middle one has to be right. Never buying the other ones again x