Ovulation test help please

[Bumblebeee]

I have PCOS, very irregular periods and I am on week 3 of Metformin after 6 cycles of Clomid failed to make me ovulate. I had some pretty sharp ovarian pains Sunday night and most of the day yesterday so I did an ovulation test which came back positive, I don't know whether to trust it or not though as the dye in the tests from this batch seems lighter than I'm used to. I went out today and bought another 2 brands to check the brand I used yesterday against it and the test line seems a pretty similar colour on all 3 yet the green one seems almost positive while the other 2 are way off. The green one is also 20ui whereas the other 2 are 35ui. Do you think yesterday's positive (on a green 20ui test) can be trusted please?

 

[Bumblebeee]

This is yesterday's possibly positive test.
Just realised I didn't word my original post right, I know the green one isn't positive but it is the darkest/closest match to the control line I meant