What can I do to get over my illness/tiredness?

I'm in my finals now and for my french oral final, I studied all night long. I passed but when I came home I crashed.. I've been ill for a week. I've got a very sore throat, headache, dizziness,... I already had to postpone a final. I want to get better as soon as possible. I've been doing nothing but sleeping or watching tv + eating stuff like soup etc. How can I get better fast? Is there anything I can do that's good for my body? I already take meds that the doctor prescribed to me..