Am a bit confused shouldn't the lines get darker if am pregnant

Am I pregnant ?

I took another test today and the line is still very light

The 1st test I took today was from $1 and it showed up negative

The second test is a ovulation test .. looks like am ovulating soon cause it darjer then yesterday

The 3rd test was from 2 days ago and it's still light

And the lastv test was from today and it's still faint

Shouldn't the lines get darker I been testing since the 24th and the lines still haven't come out darker

And according to glow I would only be 3 weeks and 5 days based on my last period