What do I do?

I am 17, and my doctor said I was on the highest dosage I could take. Yesterday, I ran out of Pristiq and thought I had another bottle set aside so I could hold off for my script to be filled. Yeah so apparently that was my backup bottle. I wont get it filled for another three days. What do I do? I am having flu like symptoms and hot flashes. I am just trying to get through a 12 hour debate tournament tomorrow at least. Any advice??