Hi Kirsty,
I'm not sure if the docs will prescribe anything without a diagnosis and also your insurance may not cover it but Provigil is very good for fatigue. Some have taken Amantidine and had it help also. It's worth a try for you to call and see if they'll let you have something. You are not in the U.S. right? I'm not sure how your health system works.
The 15th is right around the cornier so hold tight......hopefully answers soon!
Very good day to you!