My LO is 4 1/2 months and I am exclusively breastfeeding...When my LO was 1 month old, he would only poop about once a week. The Pediatrician didn't have a concern for it because he said my baby was just taking in all the nutrients and didn't have any waste. But my son soon developed a sensitivity to lactose, so I switched to soy milk. Once that happened, he began pooping every 2-3 days. At my LO's 4 month check up, the Dr said my LO's digestive system is matured, and I could go back to drinking milk and having dairy. Since then, my son has only pooped once in the last 9 days. He doesn't have any uncomfortable moods and has plenty of wet diapers. If he goes 14 days without a dirty diaper, I'm going to call the Pediatrician.
Is this a normal experience with other moms and babies? Should I be really concerned?