Hi guys, I'm looking for some advice. Ds is 5weeks old and for the past 2 nights has been grunting heavily throughout the night, occasionally during the day when he naps also. He is combi fed and due to being 6 weeks preemie and my milk not being established. Brings up wind fine but goes for 12 hours without a dirty nappy but then can have 4 in a row. All nappies are wet. His tummy seems to make lots of gargling noises after feeds too. He falls asleep on myself and Dp fine but when settling into moses basket the grunting begins. He also brings his legs up (crunches) ob most occasions when he is grunting. He seems to be asleep throughout but myself and Dp are getting no sleep with the amount of noise he is making. Please help 
TIA