So, false positives are extremely rare. As long as the line showed up within the timeframe they give you, it's a positive. Why do you think it might be negative?
@Rachel1199 If it gives you any comfort the bottom test in my pics is the first one I ever did then I used a FRER probably 2-3 hours later (top test) and you can see the difference in lines! I'm now 22 weeks! It all depends on how much HcG the test requires to show a positive, hence why it can be faint. If you have a FRER to use I would but if you've got another of the same test then it should get darker in the next 48 hours + xx
I'm heading to week5 today.. I hope everything goes smooth now 😀