By any chance are you double jointed? I ask this cause my bf is completely double jointed and the girl I work with who is only 17 is too. She has been complaining of her knees and legs the most. They have been to the doctors but there is nothing they can do for being double jointed. They just have to take what ever pain reliever works for them.
Do you play sports? Do you just sit around the house? The doctor will probably ask you questions like these at least the ones here where I live do.

If you can try and pint point when the pains and other odd feelings started to appear. Like if you were in a car accident or if you got hurt during a game or something. Write down all that you can remember it might have stemmed from. Does the pain get less at night or day? Write down what helps and what doesn't. When you do go to the doctor take the stuff you wrote down to him. Alot of times I forget to tell the doctor something and have to call leave a message for him to call me back so I can tell him. Now I write it all down and just hand everything I wrote down to him. He makes a copy and puts it in my file.
Just something to maybe ease your mind other than thinking you have a horrid disease until you can get to the doctor.
How are your fingernails. Vertical ridges that appear on the nail can indicate disorders as simple as iron deficiency, poor absorption of vitamins and nutrients, overall poor health or they could indicate something as serious as kidney trouble. Vertical ridges, as well as bumpy nails, can also suggest's one is prone to developing arthritis. Ridges running horizontally across the nail can indicate physical or mental stress. White lined bands across the nail beds can signal a protein dificiency.
The things your are experiencing can be from so many things. Don't label your self until the doctor has.