Lines not getting darker

I’ve recently found out I am pregnant, over a week and a half I’ve taken many tests just to make sure I’m still pregnant (I’m very paranoid over everything lol) . But all the lines on my tests are the same shade and not getting any darker and it makes me worried .

Also I just want to add I haven’t had any bleeding or anything out of the ordinary . And I haven’t had many symptoms (prob just because I’m still pretty early) so its hard to judge off that too.