LH test

Hi,

I just did an LH test for the first time (I’ve never used one before), and I’m wondering how it’s possible that both lines are already dark (right one is darker). I only finished my period yesterday.

When I look at other people’s tests, I see that they usually start with a very light test line and a darker control line, with the test line gradually becoming darker throughout the cycle.

Could someone explain why both of my lines are already dark at this point in my cycle?

Thank you!