Might be a silly question

I'm one of those women who has to keep taking pregnancy test to reassure that I'm still pregnant. Just took one around 9pm and the second line was rather faint. Very much visible but not as dark as I think 6 weeks 3 days should be. Is it because I took the test at night that it is not as dark? I know the hcg hormone is much more prevalent in your first morning pee. Just wondering. Thanks in advance to anyone who responds.