Spotting

Nancy

Hello all! My AF was due somewhere between 9/14-9/16. On 9/12 I woke up to very dull cramps and I knew AF was on its way, so I put a tampon in and went on my way. But the end of the end I noticed I was just spotting very lightly, which is odd bc I may spot in the morning, but later AF will make her grand entrance. So from Tuesday to Sunday (today is very light) I've been spotting. Thursday and Friday was a little heavier, but dark brown!! And no cramps whatsoever all week. I've never had such a light bleeding/spotting or have it so brown for almost a week. I'm hoping it is implantation bleeding, but for 6 days??? I'm 34 and my husband and I have been TTC for almost 8 months now for our first child. I took a pregnancy test today and BFN. What are your thoughts...super odd period or implantation bleeding?