Why Is A Child Getting Overheated?

my child is hot and when i feel his forehead it seems asif he is over heating but he is complaining he is cold when i put him to bed he wakes up and he doesnt aknwolage what he is doing or where he is then i bring him into my living room and lay him down he keeps coming out with things that dont make sense e.g i said to him your sandwhich is nearly ready he replyd i dont want that little lady and that big man in it mummy ... he keeps waking up complaning of bad dreams and wont tell me what they are and when i ask him what is up with him he replys saying i dont no mummy i dont no what to do mummy and help me mummy i also think he is hallucinating and when he is sleeping he is swetting alot moving around making alot of noise and pulling his tong out alot he is also doing this when he is awake and he was complaining of a sore throat so i checked his mouth and his glands are swollen and he is finding it difficult to talk he is also not eating propperly and he always wants a drink and when he does talk sometimes its hard to make sense of what he is saying it sounds asif he has a swollen tounge ... would it be possible somebody could ring us as me and my partner are out of credit and really would like to speak to somebody the number is 0000 thankyou .