VVVVVVFL pregnancy tests

On the 27th, I got a very clear negative.

On the 29th I got a VERY VERY faint line, like first glance negative but closer look you can definitely see it.

On the 30th I took 2 tests one in the am, one in the PM again both VERY faint the am one was about as faint as the one on the 29th, the PM one is almost lighter.

Today, I took another test, theres a line, but it's even more faint then the one yesterday....

I got excited bc weve been trying for 2.5 years after i miscarried our first. I'm really hoping this is our month, but with the test getting lighter I'm getting more scared. I went for a blood test today. But have any of you had pregnancy tests get lighter and still have a healthy baby??? My period isnt due until the 2nd or 3rd, so maybe it's too early yet....idk someone ease my mind a bit!! #prayingforamiricle🙏