I have Crohn's disease and started taking 50mg/day of 6MP to help get off prednisone. I took 6MP for only 2 weeks. Stopped 2 days ago. It made me very nauseous. For a few days I threw up hours after taking it. I started experiencing muscle fatigue and pain three day after taking my first dose. The fatigue and pain only got worse and is still worsening. Did anyone else experience this problem? Did it go away? How long did it take?