Clomid and TTC

Caitlin
I took clomid on day 5-9 of my cycle. (First day was 8/17) yesterday, I spotted, but only a small amount and that was it.  I have PCOS so my cycle is a little crazy.  I should be starting any day now, but wasn't sure if that was implantation bleeding?  Anyone have this? Would I have implantation bleeding close to when I'm suppose to start? Fingers crossed!