DD is 31/2 months but she's been posseting alot especially after her first immunisation.She weight 2.69kgs Am only breastfeeding but her weght gain was low for 3 weeks says HV. Should i introduce bottle to gain more weight? any advise! DD is very alert and everything else seems ok HV is reluctant to advise introducing bottle. Is she getting enough from breasfeeding? sometimes she's reluctant to feed.