Af early or possible implatation?

Yesterday I woke up to light pink spotting so I assumed af was coming so on went a pad and waited for the cramps and up flow lol but now day two and still light pink spotting when I wipe and usually my af starts out brown not pink (sorry if tmi). Read that implantation bleeding should only last 2 days. I wish 1st would either kick fully in or stop and it's implantation bleeding. Almost 3 yrs in ttc with donor, I'm just ready for it to work. Anyone experience implantation bleed?