A Lil TMI ..WHAT IS THIS ?

Ok so I was supposed to come on my period on 4th September but no sign of AF untill this happened today ... browny light pinky red only when I wipe '_' .. I have had weird periods for few months .. I skip a month then come on next month then skip month after that .. does anybody know what this is ?

I have a docs appt booked but I can't help but worry untill then