Implantation bleeding

I know it is very rare, but, ladies that have had implantation bleeding how long after did you get a bfp? I had pink and a speckle of blood on the 21st at tea time, so around 36 hours ago and i am obsessed i cant stop testing for a bfp. Is it average around 2 days after or did some of you not get one for a while after? Im just wanting to settle my brain xx