So I'm around 16dpo, making me about 4 weeks 1 day. I took a test yesterday afternoon when period was due and got a faint line (see pic) I took another one this morning with first morning urine and the line is the same colour.

I thought it'd be darker considering its the next day and it was fmu..

I miscarried in July at 7 weeks so am absolutely terrified this will be a chemical. I had a very strong positive 3 days into missed period, I'm now 2 days into missed period and still so faint...

Is it really normal or should I be worried? When will I be seeing a difference in colour?