I had my baby 8 weeks ago and have been feeding her both breastmilk and formula. My period has started, and I wondered whether that means my milk supply is about to stop. It seems to be flowing just fine, so I had thought my periods might stay away for longer. I'd like to carry on with breastfeeding until she's at least a year old. Does the onset of my period mean the milk is drying up, or do you have to be exclusively breastfeeding for periods to stay away?