VFP Three days in a row?

So I’ve actually told women to not test and compare lines because a positive is a positive....buuuuuuut. I’ve had faint lines three days in a row. I think I’m exactly 4 weeks today, so they are all early tests but the fact they aren’t getting darker is getting to me. Can people share their (positive) experiences with the same? I just need a reason to not worry about it.

Update: retook the test right away, because as mentioned in the comments, I’m a crazy person. But I think the one I took before dinner was faulty, this one looked much clearer/darker. Thanks, ladies, for talking me down.