My daughter born on 02 August 2016, preterm, 36 w 6 days, 1.92 kg. We are bottle feeding her expressed milk since she wouldn't direct breastfeed. After 15 days, we gave her 1 feed of formula after which she threw up after 2-3 hrs. Since then she vomited 2-3 times continuously. And at 4th feed, she was hungry like anything but refused to take feed by bottle or spoon. She spit milk from her throat and does not swallow. Before this issue, she used to take expressed milk by bottle and had hiccups after feeds. She also seems to have some issue with her throat and has difficulty swallowing. We have given her formula feed one more time after that, and have observed that her reflux problem aggravates after feeding formula. But during her time in hospital she was only fed on formula for 3 days, and seemed to have no issues. After discharge from hospital, at home she was fed expressed milk and seemed to be fine till 15th day apart from minor gas issues. She has also become more finicky due to this ongoing issue and opens her mouth as if wants to vomit frequently. Also she takes less milk feed than usual when has more problem as if she has some issue in her throat and stomach. She also seems to have certain kind of irritation in her throat as her sound is becoming more harsh.