Every night my LO goes to sleep while after a feed at about half 8. But for the last few days he wakes up every hour screaming blue murder. He will only o back to sleep if he nurses or wears himself out from crying. I feel powerless, as I can't help him. This is extremely unlike him. He used to sleep till 12 have a feed and go back down till half four. It is not teething, already tied teething gel. Already tried gripe water. The only thing that sent him to sleep last night was calpol.any suggestions/ ideas welcome