My son is 5 weeks and yesterday all he did was eat every 1 to 1.5 hours until the evening where we was basically attached to my breasts from 5-8:30pm when he finally passed out. He didn't nap at all either and not from lack of trying!  All signs to me were pointing to growth spurt but he just slept from 8:30pm-3:00am!!! He never does that. Longest he's gone has been 5.5hrs and that's rare. Also trying to feed him now and he barely finished one side. So do you think this is a growth spurt or just a bad day that lead to a good night (sleep wise)?