The pp is right that not very many women spot during implantation. You can get a blood test from your doc and know for sure. Or just keep testing. The dollar store has tests and they are accurate. On the pregnancy test it says after a negative wait a week and test again, but that's probably so one doesn't get discouraged from multiple negative tests. Good Luck!!
Hi,
I'm also playing the waiting game so I know how you feel =)
Good luck!
I would suggest testing every 2 to 3 days, as hCG doubles every 2 days if you are pregnant.