Anyone conceive while breastfeeding?

S.K
Hi, my lo is a little over a year old and we are currently combo feeding, bf and formula while at work. Anyway, my period hasn't returned yet and I'm not on any bc. I'd like to begin ttc #2 in about 6 months but not sure if I'd have to completely stop bf-ing. Has anyone successfully conceived while breastfeeding without the return of aunt Flo?