I'm 6 weeks PP,when will my period come back if I'm breastfeeding?How often will I ovulate if I have NO period?

You may not have a period until you are finished breast feeding. There is no way to know for sure as everybody is different. You will most likely still be ovulating, even without having periods. You will need to use an effective form of birth control to prevent pregnancy, or you may have your next baby sooner than you plan.