Not pooing

Amberlee • 4/23/19 boy mama

My son is 3 months old and exclusively breastfed. He used to poo once a day. Now he went 10 days without pooing and he’s on his fifth day of not pooing. Is it normal or should I take him to the doctor?

Update: thanks y’all. I called his pedi and she said to give him 2oz of prune juice. So I’ll see how that goes.