This is just my experience, and it's not particularly reassuring, but - this is what happens to me now after a m/c in december. I find my CP goes HSO a day or two before I get AF, and I get localised cramping, I noticed it behind my belly button at around 9DPO and thought perhaps it was implantation. But it really wasn't. All the preg symptoms I got when I was actually pregnant I now get fairly routinely. It sucks. The only clue I got last month that I wasn't UTD was a temp drop from 37.1 to 36.7, and then AF turned up 2 days later. The way I'm planning on not going crazy this cycle, is to just expect preg symptoms, cos I just think that's what my body does now. It's decided it's fun to torture me or whatever

Eep, sorry for the super negative post! I really hope it's different for you babe, it's gotta be right for someone! Plus, it aint over til AF actually shows...