Baby with reflux

Our 3 week old seems to have a case of reflux 😓. It’s taken us a week to realise that her behaviour wasn’t typical of a baby. Strangely she was fine in her first week but it’s gradually gotten worse. She always throws up after being fed (breastfeed), sometimes it’s projectile vomit and through her nose, other times it’s just a little cottage cheese type sickness. It’s usually followed by a period of her being very uncomfortable, acid build up and she stops breathing for short amounts of time. Her breathing is generally quite wheezy and grunt like 😫 It’s terrifying. We’ve started keeping her upright and raising the head of her cot which has helped but the vomiting and breathing issue is still there. She also gained weight in her first week but since the reflux symptoms started her weight has remained the same. We have another midwife appointment next week and we’ll ask them for advice but I don’t think there is anything that can be done 😓

Are there any parents here who have been through the same? I worry so much, it’s so difficult.