This morning my DS (18 months) has woke up 6.00am and his hands and feet (was wearing socks) are blue and absolutely freezing the house wasn't really cold and I've had the heating on for an hour now and they are still freezing and still is feet under his socks. Also 1 cheek is blue and his lips and top of his lips under his nose. Hes had cold hands and feet before but they warmed pretty quickly with heating and playing. Is this normal or cause for concern?
Thanks