Implantation bleeding

Courtney
Ok ladies. I posted 9 days ago about possible IB. I am not due for AF until this coming Friday, but I am on day 9 of very light, on and off bleeding. I saw my OB last week and she said everything looks normal and that I am not experiencing AF right now. My question is, have any of you experienced IB for such a long period of time and then ended up being pregnant? I tested again today, but it's still negative. I have never ever had this.