I know that mesalamine can in rare cases cause pancreatitis, so it wouldn't surprise me if sulfasalazine could as well. Have you asked your doctor about it? I hope you feel better soon!
Thanks for the feedback Cat-a-Tonic -- i'm feeling much better since I initially posted the question; as far as speaking to a doctor I have an appointment on the 7th of August and i'll let her know my concerns.