Looks like your baby is healthy, good he is on exclusive breast feeding. If your baby is growing well and putting on weight inspire of occasional vomiting that means probably he is over fed. Try to nurse your baby in lateral and head high position. Usually at this age they put hand in to mouth and get gag reflex, which is another cause of vomiting.

need to talk about the  cough and bloating...  if its persistent  then we need to add cough syrup..  if intermittently then we can js nebulise the baby...  Kindly get teleconsultaion