I have joint pain every time I have a flare. I almost always know when I am going to start flaring because, I get horrible lower back pain which just never seems to go away. This is usually a few weeks before. I also ache horribly in my knees and hips. Then the mucas starts and then.....I am heading to the doctor again.
I have been on Asocol for 10 years. For me, I don't think the joint pain is from the Asocol, just part of having this disease. I have been fortunate that I don't seem to have any side effects from the Asocol. However, I think I am reacting somewhat to the Rowasa. This makes me curious because I think they are the same type of medication, just goes in the other end. But, I seem to just feel fluish all the time since starting back on the Rowasa.
I would definately talk to your doctor though! Good luck. :)