I can relate to this! Sometimes I will get awful aches and pains--more severe at times as opposed to others. I have been prednisone for about a month now and as I am slowly getting off of it, the pain is returning. Sometimes it hurts to do even simple things, like driving, walking, or going up stairs. I am 31 and when I get the pain and stiffness, I feel much older.
When I can get out and go for a walk, I feel so much better. Of course, this all depends on how my knees are at the moment--I have days where I can do more than other days.
Hang in there and I hope you start to feel better soon!
Chris, I am 27 and also feel like I am 90. Right now, the arthritis pain is my biggest complaint, although it is getting better now that it is getting warmer out. I have found that working out actually helps tremendously, as long as I don't do squats or lunges, which my knees don't like. I also take Ultracet for pain before workouts, so I can workout harder and longer. Someday, it is hard to start working out, as moving certain parts may hurt and things pop and crack, but I always start feeling better during the workout and feel much better afterwards. I've actually gotten addicted to working out, since it helps with the pain, stress, looking anorexic, and have found that when I concentrate hard on working out in a class, I don't focus on hurting and actually forget about the pain at times. You will have to experiment to see what you can handle without pain and what you can't. Start with something easy on the joints like pilates, yoga, the elliptical or bike and increase if your body is cooperating with those and you feel up for it. Even if you can't increase, just doing something may help.