Another thought, different tests from the same batch bring up different coloured lines. One of my tests had a mark in the contol line and the test line. Some were lighter than others, which I was worried about because I had had 2 MC's that I got second lines with then faded away but that happened very quickly. I think you are why not go to the doc and get a test done and also a BT then start enjoying you BFP and not worrying as much/or more if you are anything like me?????lol. Good luck.