First shot - sleeping?

DS had his first shot yesterday at one month - the first HepB. He had slept a lot yesterday before the shot anyways, but then last night was super super cranky and didn't get much sleep. Now today, he's sleeping a lot so far - almost coming on 4 hours since his last feeding- is this normal (more sleeping after shot) and b) should I wake him?

Re: First shot - sleeping?

The shot may have effected it. I would let him sleep a bit more. They always say never wake a sleeping baby and they won't let themselves starve. 4 hours isn't too bad either... maybe wait one more hour.
If he's still cranky you may want to give him baby tylenol, but call your Ped first. Our Ped recommended it after a shot if he was cranky.