I was diagnosed with RA several years ago and have been on MTX for about 8-9 months but July/Aug/Sep always seems to be flare time. Has anyone experienced severe pain in the buttocks? I had a couple days a few weeks ago that hurt pretty bad but tonight I had to crawl and get help from my wife just to make it to bed. It's severe pain on one side. I am trying to find some humor in being brought down by my butt though! Anyone else experienced this? Any advoce? Go to the dr in a couple days.