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Your sore back is caused by tight back muscles causing pressures on the muscles there. To get rid of this problem you have to free up your back muscles to release the tightness in them causing the discomfort and here's how to free them up:

Back:

(do while sitting on a chair)

Place your left hand on your left leg next to your body. Place your right hand over your left shoulder, fingers over the back and the palm in the front, and firmly pull down on them and hold. After 30 seconds slowly lower your body forward and to the outside of your left leg, keeping your left arm as straight as possible. When you reach your lap remain there for another 10 seconds, then release the pressure but rest there for another 30 seconds. Then reverse your hand positions and do your right side.

For best results relax your body first by taking a deep breath and exhaling then remain this relaxed.

You have tight neck muscles causing your head pains. The muscles go to the top of your head to cover a lot of area. When the muscles are tight they can restrict the blood flow in your head so less oxygen makes it to the brain to result in you feeling dizzy. To get rid of these problems you have to free up your neck muscles to release the tight ones pressing into the throat and here's how to free them up:

Neck:

Place your hands behind your head so your fingers meet in the middle of your neck. Press into the neck with a moderate pressure and hold. After 30 seconds slowly lower your head as far as you can, then remove the pressure from the muscles but continue holding your head down for another 30 seconds.

For best results relax your body first by taking a deep breath and exhaling then remain this relaxed.

With this swine flu thing id get it checked out!!