I have had these symptoms for 3 weeks now. I have really stuffy sinuses, especially the right nostril. I have a really itchy mouth and a bit of a sore throat. I've had antibiotics & claratyne and feel no better. I've been to 3 doctors, one said sinus infection & hayfever, one didn't really give me an answer and the 3rd said either flu or glandula fever. It doesn't feel like flu, I'm not aching at all, I haven't been sleeping much because of the blocked nose (it feels like there is pressure across my cheekbones) and the itchy mouth.