I posted this in children's health but no one has replied.
DS is 3.5 weeks old, breast fed and has had a very unsettled 24 hours. Late last night he vomited a few times and then was up most night grunting and struggling every time he passed gas and stools. He has continued vomiting during the day. He is breast feeding very frequently, does not seem dehydrated, loads of wet and yellow poo diapers, and no fever.
Is this a temporary upset, or the start of reflux or something more serious? Should he be seen by a doctor or is that OTT?