Hello Sir or Mam ,Is any trick to know about problems of 4months my baby if crying ,and some mouth watering like small bubbles coming ,is it any infection ,or stomachache,Reply me

A. it is very difficult to comment here without a proper examination so it is better to consult your doctor and get it properly physical examine and guidjiance accordingly for this matter to clear this...please consult your doctor for this then only the correct diagnosis and treatment suggestion is possible after clinical examination and knowing complete history. its very difficult to comment here .