Faint line at 5 weeks

So I am still testing like normal and my lines are still really faint. Where you can’t even really see them in pictures or anything. I am using mom med hcg strips from amazon and I have 55 of them so I decided to to line progression for my own peace of mind. My lines are getting darker but they aren’t as dark as I feel like they should be. I don’t know I mean as long as they don’t get lighter it’s fine right?