TMI ! Implantation bleeding? PIC IN BELOW!

So October 11th was my last period. I am almost 100% sure I have PCOS. I went to the Doctor but I don't particularly like her, (looking for a better Doc). Any how usually I don't have a period for 3 months then bleed 3 weeks. In October I only bled for 8 days that NEVER happens and I am almost sure I had a miscarriage, I have this feeling that's what it was. Again not fond of the Doc or hospital.. I have had thia dark brown kinda chunky discharge for about 4 or 5 days now. I took a test the 16th of this month it was negative, so does anyone think this is a start of af or implantation or what?