Implantaion after getting a BFP❓‼️❓

I'm not too sure if I had it with my first I had super light pink spotting a week after I found out at 4w 3d with my first but I also bleed for 2 weeks a few days after so idk if that's what it was or if it was from the bleeding. So I was just wondering If you have gotten implantation after a BFP? And how long after a BFP did it take for you to get it? Or did you not get one at all?? Just curious to know as I am 4 days late with no signs of af and preggo symptoms.