Baby is 5 months old. night sleeps are very very disturbed due to gas. pulls legs upwards then slams it on bed several times. arches her back and tries to pass gas and gets up from sleep crying. I massage her tummy atleast 6-7 times whole night. and presses her legs against tummy to comfort her. but within 40-50 mins she is same again. she is 7 Kg. exclusively breastfed. have tried colicaid and online tummy roll ons. all in vein. please help.