Just wondering if anyone has had a non existant or hardly noticeable change in the colour of the positive line on FR tests in very early pregnancy?

I know a line is a line and a positive means pregnant not what the HCG is doing but after 5 m/c every time my line has not got stronger its been a bad sign. Its definately not lighter but doesn't look any darker either.

Arrr I didn't think I would be this worried again. Once again I am absolutely freaking out.

P.S those that know my family please keep this quiet.