Baby is 3 months old, we are giving breastfeed + formula milk nan excellapro and similac iq+ stage 1. From past 2 weeks she had mucus and making sometimes sound, she is spitting out milk almost on each feed irrespective of type of feed. Sometimes she had sneezing too. We had consulted doctor they have given mucolite for cough and domstal for vomit. Still seeing vomit issue and now she is refusing formula milk . Im very much concerned for her growth as my wife had gallstone surgery and she had less milk flow now.