Lines not getting darker on pregnancy test

I’m three days away from my period and usually by now I would get blazing positives but my lines are pretty faint still in the picture with the four test that’s when I was about 3 weeks with my daughter and the other picture is from now the top one I took last night and then the bottom this morning and I don’t see much of a difference am I being crazy ? I’m just worried about another miscarriage as I know lines should be getting darker and mine are staying the same really someone please tell me I’m looking way too much into it