Yes we need more info. At this point I'm inclined to say don't get a dog though if it is going to be your dog and not the family dog. In two years from now you may be going to college or finding your own place to live.
You won't be bringing the dog to college and finding a place can be easier without a dog, you can get the dog when you are settled in life. My one mistake was getting a dog at 14. I'm now in my last year of college and looking for a career and I just don't have much time for a dog. Thankfully my mom loves dogs and takes care of her.