I'm sorry this happened to your baby:( It is great that you have brought your baby to the doctor to be checked out and I hope he gets well soon.My thoughts on the fall are indicated below, according to your worries:
1. Will his behaviour be back to normal? Pains me to see he's overly cautious and not so happy yet.
-- Your baby is probably still a bit shaken up from the ordeal but babies are generally extremely resilient. Give it a few days and keep monitoring baby, I am sure he will be back to his fearless explorer ways soon.
2. His upper gums has become blue black, will anything happen to his mouth/teeth/gum?
-- The blue-black is probably due to bruising and I reckon that's normal. My one-year-old cousin once smacked her mouth on the top of a chair when she slipped and her gums did bleed for a while but it stopped in a few minutes. Her gums were all bruised black and blue but none of her teeth were chipped or loose and she ate normally. Everything went away in a week. If you are worried, you can go to the dentist to have it checked out.
3. Accident happened in the early afternoon and he is sleeping now. Should I be monitoring through the night?
-- If a head injury occurs near night or nap time in an already tired child, you may be unsure if the drowsiness is due to the injury or whether it’s just time for sleep to naturally overtake the child. Let baby fall asleep but do a check on baby every 2 hours and look out for any 1) changes in baby's colour, 2) any change in breathing, if it is irregular or baby is gasping and 3) if baby exhibit any strange twitching.
4. Anything I can do with regards to the bad goose egg? I rubbed with a boiled egg already.
-- A goose egg might look scary but most of the time it is okay. It means that there is swelling there, but it is on the outside of the skull, not on the inside, which can be much more dangerous. I'd suggest you use a cold compress on it for five minutes each hour. I usually use a bag of frozen peas or frozen vegetables when I have bumps and they work just fine as well.
Hope this helps!
http://www.askdrsears.com/topics/health-concerns/childhood-illnesses/head-injuries-2
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