My friend's 5mo baby has been drooling since she was 3mo.. is tht a sign of teething?

Some babies do develop teeth early so that could be a sign. You can also check the mouth for any other discomfort such as milk thrush or ulcers.

Thanks Samantha. her baby looks fine... without milk thrush or ulcers. maybe she's just going through the teething phase.......

Hi. You can read more here: https://sg.theasianparent.com/be-prepared-for-babys-teething-symptoms

thanks