Sounds positive. If all of this is out of the ordinary for you on your usual cycles then quite possibly it is implantation. But unfortunately there is just no way to tell until testing time. Wait it out til 14 DPO if you can, then you should get a definative answer one way or the other. If you test early and its negative you will still be wondering "what if" for a few more days anyway. I know.... the waiting stinks... but GL.