The baby may regurgitate after feeds and it may come out of the mouth or nose. It is normal, as long as the baby is gaining weight and passing adequate urine (more than 5 times in a day). Reguritation may be partially prevented by burping the baby, burping is a process of releasing the gas by mouth. Babies tend swallow air while sucking at the breast, after feed this swallowed air is pushed out through the esopahgus and the mouth, and can be encouraged by putting the baby on the mothers shoulders and gently patting his back.