Poor you xx Have you got any water flavouring? If you have, try making some up with hot water (as in from the kettle, obviously). Paracetamol would help too - probably best to avoid ibuprofen unless you've just had a shake.
If you get really stuck, you'd be ok with a sugar free lozenge or two - I think Strepsils do a sugar free version. Obviously not loads, but when you're ill, sometimes you have to make a compromise or two.