Implantation bleeding

Hi Ladies/Mommas

Im just wondering at what point in your cycle did you get a BFP? Im currently on cycle day 47 & had a small brown bleed around time of af for literally a day (usually have heavy periods) and then literally nothing else since apart from pelvic pain. Iv been extremely tired & got tender breasts but its been 12 days now since "suspected implantation bleed" and i still keep getting a negative on hp tests. Would it have showed up by now or am I just waiting in vain? Any stories? Tia