Anyone have any advice on vicodin?

Earlier here on fluther, I stated I had chest and back pain and needed adivece. Well for those of you that answeres, thank you. All your advice helped untill my mother got to my place to get me to the hospital. They ran a bunch of tests and at the end perscribed me som vicodin. I have never used vicodin. The thing says to take 1–2 by mouth every 4 hours. The pain is extrem and I have only been taking one at a time. Would 2 be a bad choice? I take one and it doesn’t help so I don’t know.