Am I over thinking

Me and my partner have been trying. We want kids but in no rush. Usually my period happens every 26-28 days (28 days being max) it’s very rare for it to be 29 or even 30 days.

I have been testing the past 2 days and one test I do is negative and the other test I do there is an extremely faint line & I do another test it’s negative and another test I do same thing very very faint line.

This is making me over think also is this normal.