Still may PCOs after giving birth?

Sino dito ang may PCOs po dati pero nabusntis and after giving birth nag monthly ang meanstruation? Sa case ko po kasi After giving birth and losing my baby last OCtober ,nag monthly na po meanstruation ko, tas now 13 days delayed na ako, pero Panay negative sa PT , laging masakit ang likod, madaling mapagod , Minsan parang nasusuka..