Line progression or chemical

One on Saturday at 11dpo which was the bottom one

Sunday at 12

Then today at 13 dpo one first response

And one dollar store test

I know you’re supposed to use the same brand should I be worried that my first response got lighter

Update I’ve taken one before bed and this is what I got I edited with saturation so people would see the line too

And here’s the original picture

Today 10/2

Bloodwork was at 0 and nothing was on ultrasound so not pregnant anymore. 😭😭