Back hurts from years of carrying my backpack to and from school. What to do?

[star girl]

Since elementary school I've been carrying my backpack to and from school. The homework has been piling up since high school (I'm now in 12th grade) and I've been shoving a bunch of text books, heavy binders in it each day. It has always given me a sore back. There has really been nothing I can do about it though. My parents say 'lighten your load, don't take so much home!' But, what am I supposed to do? Stop doing some of my homework so I have a lighter backpack? I can't do that. From the start of lasy school year, I've been carrying my backpack on my right shoulder. I found that by doing this my back wasn't sore, and I didn't slouch as much as a I walked. However, my right shoulder blade area is starting to ache and has been doing so for the past few months. It has gotten to the point where it aches even if I'm not wearing my backpack and it's very uncomfortable while sitting long hours in an hard plastic chair at school.

I know I should go to the doctor, but I want to know what they might suggest I do before I go. Warm baths don't help. Would they send me to a massage place?