My 7 month old was sitting up on the floor and fell backwards on to wooden floor (that was covered in a play mat but it's not very thick). He was very upset for a few minutes - now back to his normal self. I'm not taking him to hospital but trying to work out when I would as guessing he will have more little accidents as he learns to crawl and walk. Would anyone take baby in this situation? How do you figure out when to take them to be checked over?