Lines too light?

Ashton

I feel like my lines are kind of light for being probably 4-5 weeks pregnant and I feel they look different every time. Is it just because of the different tests? They’ve all been done later in the day; today’s is the top one. I start second guessing things and worry. I won’t see a dr until 7-8 weeks and it’s agonizing because I would love some kind of confirmation that everything is all good.