Pms late

Today tis the 17th Jan. I'm 4 days late with my pms. I only get n light spotting since Friday and its not even much. I did take 3 home pregnancy test yesterday. The clearance digital test showed error. And the other 2 cheap test showed only one line but I still not received my pms yes? I ask big forgiveness for the picture I just want to show your ladies. Can it be possible that I'm pregnant can this be spotting and still get a negative test because I'm still early maybe? Does this looks like spotting?