Hello, I work night shift for the last 6 months and i have been experiencing headaches, sinus pressure, dizziness from time to time, fatigue, and muscle and joint aches. I have never experienced anything like this before. I was wondering if it was something as simple as a vitamin d deficiency or something else? I get about 8 hours of sleep a night and I work out 5 days a week. Recently I havent had the energy to exercise.