Pregnant?

I was supposed to get my period on September 2nd, I ended up getting it on the 3rd and I had started off spotting, then it got a little heavier up until today (sep 6th) I stopped bleeding heavy and started spotting light pink only when I wipe. Which is weird to me because my period always last 4-6 days and this time if it was my period, only lasted 3.

I’m not sure if that was implantation bleeding or if it was my period