He is very clingy and weepy, sleepy, bit of a temp, says his tummy is sore - but eating normally. Won't sleep in his own bed as 'I need you, mummy'. He's like this when he's coming down with something, but this has been going on too long to be an incubation period. HE says he's not worrying or anxious about anything. He also said today that his heart felt as though it was beating too fast. HELP - any ideas?