DD, who was 3 last month has been ill for the past week with a bad cough. She's had the cough for a few weeks but it has gotten worse. A few times she has coughed so much its made her sick. She's also had intermittent temps.
I took her to the docs on Wednesday and he checked her over saying it was just a virus.
She refuses to have calpol/nurofen/hot drinks/food, although she is drinking lots of water and ate one slice of toast on Thursday, Saturday and yesterday. On Friday she ate a roll but promptly puked it all up again.
She is also sleeping loads, on Friday she slept for 19 out of 24 hours and on Saturday she slept/dozed all day. Now she has been asleep since 4pm yesterday (she has woken briefly for a drink or to be tucked back in at 1am and 4am) but DH and I have been trying to wake her up since 7.30am but she just screams at us and whacks us until we turn the light off and leave the room.
Of course I am worried but what should I do? 
I really feel like the GPs just brush this off. And is there anything I should be looking out for?
Thanks!