I've had a stress fracture in my left wrist from tumbling before and now i'm feeling that same pain but the xray didn't pick anything up.?

A stress fracture: X-rays often do not show a stress fracture, but they may show evidence of bone attempting to heal around the stress fracture. Other forms of imaging, including bone scans, ct scans and mris, may detect a stress fracture that does not show up on conventional x rays.

Symptoms & imaging: Stress fractures usually cause pain, but may also cause swelling and discoloration. The nature of stress fractures can make them very hard to identify on x-rays, but some may be apparent based on their size or phase in healing. Larger stress fractures or those that have had some to start healing are often the ones that can be seen with x-ray. The most specific test for a stress fracture is a mri.