Thanks for your replies.
I am on Remicade for the Crohn's, had my 3rd loading dose about a month ago. Honestly, my Crohn's symptoms are doing much better...it's just this back pain that is not. I tried stretching last night and moving around and I cannot move like I used to--my back is too stiff and it hurts too bad. I notice as well, if I try to stretch my back, which causes the pelvis to move forward, it causes more pain in that area. Could that be a sign of AS too?
I am seeing my Internist this Friday...I am going to ask her what she thinks.