Blood when wipe nothing on pad...any explanation

Ok so I have abnormal periods and I miss my period last month but got BFN. So on mon got very light bleeding so gear up for period which is usually very heavy. So when I went to bathroom nothing on pad but when I wipe there's blood. It's very like so instead I've been using panty liners but again it's very light on liner almost brown...any ideas or suggestions. I'm hoping it's implantation bleeding