Don't try to figure this out on your own, call your doctor and ask what could be causing your enzymes to be elevated. I agree with Careful35 there are many benign causes for this and if they thought for a second that it was cause for concern you would have been ordered more tests. Your doctor will understand your concern and be happy to explain what he/she feels it could be. I wouldn't worry, but you need to put your mind at ease so call your doctor.
There are literally sooooo many things that can bump your enzymes out of normal range and so I certainly wouldn't jump straight to cancer. I am sure if you had liver cancer you would be very sick.
Have them rechecked in a couple weeks to see if they fall back into normal range.