Test line not getting darker

Test line has been getting darker these last 3 days, each time never getting as dark as the control line. Started with a vvvfl and it kept getting darker but never a good strong positive. This morning I tested and the test line was no darker than the test line from yesterday, and maybe even lighter. If it was a really dark positive I wouldn’t be worried but it’s still only a strong faint if that makes sense. So devastated because exactly a year ago I had a chemical pregnancy and it looks like that’s where I’m headed this time. The March 2020 babies group haunts me and I’m afraid this group will too. Just don’t want to lose this baby I’m so sad.