Can I Really Die From ODing On This?

Alright, so on Tuesday I experienced my first ROCKSTAR energy drink. I drank it around 6:30pm that evening and was up until 9pm on Wednesday night. I crashed until 3pm on Thursday. So on Thursday when my dad was going to the grocery store, I asked him to pick up another ROCKSTAR for me. He did and I finished within 30 minutes. So today is Friday I had to go to an ELP meeting and I wanted to walk. But on my way home I stopped by a gas station and got another ROCKSTAR. So I've drunken 32oz of ROCKSTAR in a matter of 24 hours. Now I'm experiencing body tremors like when you're really cold. They're involuntary and I can't make them stop. Every part of me is shaking. I don't suppose I'm addicted to caffeine but I could be wrong. Is it normal? I love beverages like coffee (not with beans, but like espresso, cappuccino, etc.) and ROCKSTAR. My first ROCKSTAR was 16oz Diet and the other two 16oz regulars. What's my problem? Will it subside? Do I need professional help?