OPK faint lines

Hi all,

I’ve been doing OPKs for a few months now and usually the control line is super dark, as is the test line when I’m ovulating. I’ve bought a new pack of tests, same brand as always, however this month the control lines have been really faint. I’ve tested twice today and both times the test line has been the same as the control but again, they are both really light so I’m assuming it’s a positive?

Does it matter if they’re both faint as long as they’re the same?

Not sure why this pack is different to usual, dodgy batch perhaps?

TIA