2 year old tripped and flew forward and cracked head against corner of door-OW! Lots of blood but quite small cut. Swelled into a bump about size of golf ball but gone down somewhat now-it was about 3 hours ago. Cried immediately, didn't go unconscious or anything. Went abit miserable and quiet for about an hour but sat and watched tv. Won't let me touch it; it obviously hurts but he's not gone all dopey or thrown up or anything. I remember a nurse saying it's always best to get hits to the head checked out. He's doing jigsaws and eating normally; do i take him to A&E or not?