my son who is 4.5 years fell down while jumping and hit his side head just 3 inch above his ears. with 30 min of hit, he got a big bump and i took him to the hospital and doctor advised to give ice pack and monitor him for 2 days. the next day itself the bump was not there and i didn't keep ice pack after that. hardly gave ice pack twice. it has been almost 10 days. he is completely fine and active. I think that i wrongly noticed that the bump have gone or it reappeared. but i noticed 2 days before that a hard bump/swelling is there for about 3 to 4 cm size with a little pain. from then i keep continuing ice pack. it is a bit better. there is no scar outside or redness. should i wait for some more time before visiting doctor? or take him immediately? how long will the bump and pain exits generally? please guide.