ds2 ,7 ,has a very painful wobbly tooth at the moment.It has been quite tender but then when eating his tea tonight he bit on something and said that he heard a cracking noise and since then it has been really painful.It does look a little bruised on the gum,is this normal or should I ring the dentist?I have givrn him some childrens neurofen for the pain but it is still very sore.