Implantion Bleeding?

I'm TTC for #1. I noticed that on 6 DPO I had one tiny drop of pink blood when I wiped. It didn't increase, I saw no signs of any more blood after that. I'm currently 8 Or 9 DPO. I've read that implantion bleeding occurs between 6 DPO and 12 DPO. Has this happened to anybody else and ended up pregnant?