Re: is this normal? (teenage back problems)
18 is very young for back pain, so I know it's not fun to hear from all of us that what you're experiencing isn't normal; but it is the truth. You should definitely make an appointment with your family doctor and let him guide you from there - chances are you'll end up seeing an Orthopedic Doctor.
There could be nothing wrong or something wrong - the earlier you find out the better. Good luck!
"If you can find a path with no obstacles, it probably doesn't lead anywhere.” - Frank A Clark