Wife is 9 months pregnant and past her due date by 11days. She has painful back pain on her lower back every 15 minutes, what's wrong?

Post-dates. She may end up having an elective induced delivery with Pitocin (oxytocin) at 2 weeks post-dates. Please call her OB-Gyn's office answering service and speak to an on-call doctor to discuss meeting your wife at the hospital tonight. If she can walk, it may help the pain. It sounds like you will meet a long-awaited addition to your family very soon.