Really stressing out this cycle over this-

I started to spot two days before my expected period, with it starting off pinky-brownish, and then light pink. Never enough to make it onto my undies, solely when I wiped. I fully expected my period to come, but the spotting slowed dramatically and then eventually stopped altogether the evening of the second day (the night before my expected period)

It is now day three of my missed period, four days after the spotting stopped. Tested in a FRER and got a BFN.

Has anyone else had late implantation bleeding, and then went on to receive their BFP? How much time passed in between?

Feeling like this month is bust and frustrated that my test came back negative, even though my period is late. Any insight would be appreciated