I am 6 days late with AF, 3 or 4 days before I was supposed to start AF, I had really brown spotting for 2 days. (Thinking it would have been implantation) and then missed my AF til today. Took NUMEROUS pregnancy tests that all gave BFN's. even went to the doctor and had a BFN too. He told me I could still be in early stage pregnancy being that my last period was only last month (so I wouldnt be more than 3 weeks now) still no AF but very very light spotting when I woke up this morning. Should I be worried?? I've had 2 miscarriages last year and I'm really hoping to pull through with a successful pregnancy and thought that this could be it! any advice is appreciated.