There could be many reasons. Please have it checked with a doctor as soon as possible.

Hi Ankita, baby will not without reason. Please check he has stomach pain, teething pain.

Please check the reason why the baby is crying ?? Hope you are feeding intermittently at night.. maintain a pleasant temperature and use a mosquito net

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If baby tummy full? Crying for milk? Then feed on demand.. if not apply castrol oil on baby's naval and do cycle massage, check with doctor and give colic aid drops.. read this articles hope it helps you..