Is this normal?

Nicole • Mom of a 10 year old with one on the way. Due 08/2022!

I think I’ve been on this app too much, but I’ll be 7 weeks tomorrow. I started taking pregnancy tests again now I’m stressed because the test line isn’t as dark as it was a couple of weeks ago. Am I just stressing myself out for no reason? I get an ultrasound today. The test I just took is on the bottom