I still see the line! Stalking for tomorrow's update! Assuming those tests are wondfo, they gave me a pos 8 dpo (5 days before missed period) and got darker each day. But they started out probably fainter than the ones you've gotten! And like I said, I had pretty bad back pain and some cramps at the very beginning as well, so that definitely doesn't mean something bad! I can understand that you are worried though, so maybe after you get a stronger pos you could go straight to your doc to make sure it's not ectopic and ease your mind.