What Causes Fatigue And Severe Pains In Body?

I'm a 23yr female. I have bone pain all over and the pain is getting worse. I have fatigue, which may be because of studying a lot and working. I also get night sweats. I wake up in the middle of the night, several time in cold sweats. I brushed these things off because I thought they would go away, but they haven't. I'm now getting very concerned and very annoyed with it.