Miscarriage? Chemical?

Hi ladies!!

So I took a test yesterday morning (I’m not sure DPO as I just had a baby four months ago so if everything is weird) but it came back positive!!

So because it was faint I decided I’d take one today! Again obviously positive.

I’m worried about the fact they aren’t getting darker... could this mean my pregnancy isn’t viable? With my daughter they consistently got darker and with my miscarriage they got lighter so I don’t know what it means when they stay the same.