I'M SO CONFUSED!!!
First, here's my chart: http://www.fertilityfriend.com/home/2ab1c6
Temp dip today, but only about halfway to my normal CL. This afternoon I started spotting, but it was just a tiny bit of brown and didn't pick up at all. I'm wearing a tiny liner to bed, that's how light it is. The reason I'm confused is, I've never started AF like that ever in my life, it's always super heavy right away, and I've never had brown discharge until the spotting at the end of my period. Also, I POAS yesterday, and it was negative again. So it seems like it shouldn't be implantation spotting, but it doesn't seem like my period at all. I was relieved when I thought I was on CD1, but now I just don't know what's going on again... and the more I think about it the more I hope I'm not pg.
That temp drop looks like AF to me. I wouldn't worry - I bet today your flow picks up. I agree that w/a bfn you're in the clear.