Is there any way to feel better quick after ingesting too much caffeine??

I had about 3 energy drinks totally 600 mg of caffeine in about 4 hours because I had to stay up to study. It's now 5 hours later and I still feel HORRIBLE. I have a mive headache, stomache and just an all around sick feeling. I tried to take a nap, but that obviously did not work. IS there anyway to feel better, and get this out of my system? I am trying to drink water, but I feel sick even swallowing anything.