DD is 2 months old and I haven't had a period yet. I breastfed for the first week, but it just wasn't working out so I ended up switching to formula only from that point on. How old was your lo when you got your first postpartum period? It's making me a little nervous. I breastfed with DD#2 so I didn't get one for a long time and I can't remember how long it took with DD#1.