5 week old today ds has been feeding/sucking since six this evening, he will suck/feed to sleep and usually when I put him in his Moses basket he goes straight to sleep but tonight he is eyes wide open and trying to suck his hand and then screaming to the point of sweating through his vest if I don't pick him up. He is quite warm so im presuming he is thirsty and maybe going through a growth spurt. He's a big baby, on the 91st centile (never quite sure what that means) and he is now very over tired. I've got the windows open and the ceiling fan on full blast and I don't understand how he can still be awake. Im slowly going a bit mental and feel sorry for myself and almost scared to fall asleep when he does because im so tired im worried I won't hear him, can someone come and hold my hand.