Hello! I'm 17 years old and for the past months I have had occasional lower back pains. It comes and goes. Today, I got up fast from my bed and hurt my back doing so, it's not the first time this happens. I have very sharp pain on my lower back, buttocks and even my legs. I can't bend, walking hurts and even laying down or moving my legs hurt. I'm very concerned on why, all of a sudden, my back gets hurt so easily. This has never happened before. What should I do? Is there a doctor for this kind of problem?