My si joints flared up really bad in December on me, I thought I was going to tough it out and not get any predison. Well after 6 wks, every step became pure hell. I had to have my husband pull me out of the chair, help me to the bathroom and help me get dressed. I could not drive either because I could not lift my right leg to reach the break. After 6 or 7 weeks I broke down and called my Rhuemy they got me on predisone the same day I called and had me into for si injections within 3 days. The dr who gave me the injections said he had not seen anyone this bad and in so much pain come in for si injections before. I was still in alot of pain for about two days after the injections but by day 3 I could start to feel an imporvement. It's been about 6 weeks and the injections have helped alot.