Why isn’t my line darker? 😞

Er

They both have color to them (just didn’t pick up on camera for some reason) and I had 2 HCG draws so I know I am pregnant....very early (like 2-3 weeks) but I had a MC in June so I’m still testing. Top was yesterday with FMU and bottom is today with FMU. I’m so scared to lose our Rainbow Baby 😞😞 thank for any advice