Advice Please

Rebecca • Im 22 years old, been diagnosed with possible Polycystic Ovary Syndrome. Suffer with low vitamin D. Been trying to conceive for over a year.
AF was suppose to come on the 11th October 2015, it hasent come im still getting pink spotting but not enough to wear a period towel. Could this actually be my period or could it be implantation bleeding still? Was feeling really sick late last night and dizzy.