Hello, I have Crohn's and had my first surgery last December. Prior to surgery I was on Pentasa, but my doc now has me on Cimzia. I have been getting some joint pain in my knees, ankles and elbows, but what is really concerning me is the weight gain. I have been gaining an average of 3 lbs. per injection. My doc said he hasn't heard of this being related to Cimzia, anyone else have this problem?