I am 26 years old and have been on a 10-30mg dosage of prednisone consistently for 7 years. I have Erythema Nodosum and it works great at getting rid of that for the time, but after reading up lots on side effects people are experiencing with their bones, and hair loss, its making me nervous. How long will it take for me to start experiencing problems with my bones? I already experience the hair loss, anxiety, extreme fatigue, mood swings.