Hello, what kind of pain are you having and how long have you had it? Is there anything that makes it better or worse?
From location, there are a few things that could be going on, a common thing would be gall stones, which can be very painful or it could be coming from your liver or your upper intestine. If the pain is new and severe then it would be advisable to go and get it checked out sooner rather than later.
If its milder then calling your IBD nurse or consultant is a good idea, any new symptom should always be reported. If the pain changes before you can speak to them then again either go to A+E or see your GP for advice.