pregnant whilst breastfeeding without period?

has any ladies gotten pregnant while still breastfeeding? without your period returning? I'm 10 months pp still loving life without a period ✌but I'm curious what the odds are of conceiving if I've not got a period back since birth? EDIT; I'm not using breastfeeding as birth control..I'm asking as we are considering ttc at 12 months so wanted to know if it's likely without having a regular period.