R.D.
An exclusively breastfed baby does not need anything else but mama's milk. As long as he is not uncomfortable, everything is fine. Breastmilk is meant for them and is perfect for their digestive track and can be easily digested and absorbed. Breastfed babies USE most of the calories they take in from breastmilk, so they don't have as many (or as stinky - bonus!) bowel movements as formula fed babies.