My 5 month old ds has reflux, he has been on gaviscon since he was three weeks old. He is very sickly and brings up contantly throughout the day, (sleeps on towels etc). He has been slow to gain weight and has dropped from just above the 50th centile to the 9th. Recently he has started to bring up clear fluids today it was projectile ( pyloric stenois has been ruled out he has already been in hospital for tests), whats weird is that shortly after he can bring up milk, does his tummy have layers in it?. His vomit is very mucousy and today he has has a green stringy poo. Should I take him to the doctor or is this all related to reflux.