Implantation Bleeding or Period?

Taylor

Can implantation bleeding mimic a period? I started my period 5 days late which worried me because my periods are usually only ever 3 days late & they only last 5. Anyways, I thought I was in the clear bc I had started, but I saw a video on FaceBook of a girl who thought she was in the clear bc she got her period, but it actually ended up being implantation bleeding & she was actually pregnant.