I am 5'4 and I weight 92lbs. I have always been naturally thin and eat my 3 meals a day plus junk food, but I don't seem to gain weight. I want to feel more normal than skin and bones.

Help!

You could either gain weight in muscle, or eat more food then you normally would. You can still gain weight on healthy food, so I would certainly recommend that.

Normal is what is normal and correct for you. For your bone structure and more.
Have you been to the doctor for a complete physical ?
Do you exercise? Work out ?