Gosh, Velveteen, what a terrible thing for your friend to say. I think I'd want to just take her by the shoulders and shake some sense into her, and I'm not a violent person at all (just scolded dd today for ruthlessly stepping on bugs!).
So I went through my 15 past charts last night and determined that I have never had midcycle spotting, except for ovulatory spotting on my first couple of cycles off the pill. So I still think there's a good case to be made for what I experienced yesterday being implantation spotting. BUT, just now when I went to the bathroom, there was some brownish blood on my underwear (just a bit) and when I wiped (same), and (this is the part that threw me off), a little clump o' something in my underwear. At first, I wasn't even sure it was from me b/c it's so unlike anything I'd seen before when spotting. I suppose it looks a little like if you have small clots with your heavy bleeding. It was a perfect sphere, about the size of a peppercorn and black/red in color. I mushed it up a little (this is when I was still trying to verify it came from me!) and it was definitely some kind of tissue-- sort-of stringy and colored my fingers red, but wasn't really bloody. Sorry for the graphic details, but it was so strange! My last LP was a full 13 days without spotting, so I don't think that's what this is. But I'm not as confident that it's implantation anymore either. Just weird!