Implantation or period

So on Thursday night I wiped and had like a little brown mark , then Friday it was like really watery red and Saturday was the same not too much but Iv been having really bad back pain & cramping. I’m assuming it’s AF but it’s came a week early which is unusual for me. All day I haven’t had much and just went to the bathroom and have been wiping and getting similar to this. Do you think it could be implantation bleeding or just an early period ?

Also sorry for the graphic pic , slightly embarrasing posting this.