Hi mummy,
I am not sure whether you heard of colic problem that is very common from newborn to 5 months old. There are "winds" in baby's tummy that they do not have the capability to expel it out by themselves. When they have colic, baby tend to be so fussy, struggling and some even refused to drink their milk because of the pain.
You can confirm with your paed on this. Normally they will provide colic drop if it happens to be colic.
Meanwhile, you can try bicycle kick at home to relieve the pain.
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