How faint is too faint?

We all know the scene, you are sitting there with an eagle eye focus waiting for that second line to break through and confirm that your life is going to change forever and everything you’ve ever wanted is finally happening.

But how faint is too faint? Is there such a thing?

I took a First response test this morning, and I feel as if I am going mad.

At first glance the test appeared negative but under heavy inspection & with the assistance of my smartphones flashlight I see it! A Vvvvvvvvvvvvvvvvfl. Does it even count though?

I know the logic thing to do is test tomorrow, but tomorrow seem so far a way.

What are your experiences?