I am 16 and went to a party and had my first experience with alcohol. I had one jello shot and a bit of vodka and felt perfectly fine doing so. About three hours later, I had half of a beer and felt a tad bit nauseous, so I didn't finish it and felt better almost instantly thereafter. Around 7 hours later, (the next morning) I awoke shaking and sweaty, then threw up multiple times (most were dry-heaves). Is this due to the alcohol or can it be attributed to something else?