Hello there everyone, I need some help. Sorry if I'm a newb, I'm only 17.

Friday night a friend was spending the night, so I offered to sleep on the floor. When I woke up the next morning my neck hurt a bit from me sleeping in a weird position. I was getting dressed and putting on jeans and all of a sudden I got sharp pain in my lower back. I have never experienced back pain like this before. It was very random, and I have no idea what might have happened. It hurt so bad I had to drop to the floor, and it felt like I couldn't move.

That day we had a field trip, and I ignored my pain and stupidly went anyway. I drove to school, too. Throughout the day it hurt only a bit (i took ibuprofen) and then we went and saw a Laser Show. At the laser show you can lay down on your backs to watch it, so I thought it might help. I was SOOO WRONG. I could hardly get up after it was over (it was about 40 minutes long) The pain was worse than when it first happened that morning. My friend bought me Motrin and I took it, and after a while my back had no pain at all. But now, I still am in pain. I can even feel a slight burning pain in the outer side of my right thigh. All of this pain is on my right side.

I don't really know what might this be, a pulled muscle? I am also overweight, and that could play a part on why this happened. I also was wondering what I could do to make it go away (exercises, ice pack...etc.)

Thanks. (sorry for bad grammar, i'm trying to type this fast so I can relax my back.)