Implantation bleeding or period ? 🤔 (explicit information lmao sorry guys for the gruesome details😂)

So my “period” started on the 1 of this month (feb.1.2018) it was supposed to come on the 6th. The first day it was a light pink color the flow idk ,if it was heavy but I know I didn’t wear a pad that day and (tmi) got a patch of pinkish blood (very light in color) on my bed . The next day it continued , I forgot I had the bleeding when I woke up , and when I got to work I had a patch of pinkish blood on my underwear and a little seeped through to my leggings ( does that means it was considered heavy at this point ?) . I put on a tampon at work and when I took it out later that day it was just brown stuff on it , wasn’t even heavy at all . Ever since the second it’s gotten even more lighter . To where everytime I wipe its more light pinkish stuff or it’s just brownish stuff . The third I thought it finished so I had sex with my boyfriend and stopped midway once we notice it was a little bit of blood still coming out , but it was just light pink not bright red at all . It’s now the 5th and I’m still spotting I guess. Idk if this is my period or implantation bleeding at this point .