Last week DS woke up and he had 8 big red bites on one leg which have since gone down and left little scabs now. This morning he woke up with two big bites on his other leg. I have no idea what can be biting him. He wears his P'j's and a grobag at night, I change his bedclothes about twice a week. I can't imagine that mosquitos are around yet so not sure what I can do to prevent this - any idea????