was cutting down trees in teh yard. Went to move one of the downed trees and felt/heard a "Crunch." Worst pain of my life. Carmen had to help me walk to the car to go to the ER for Morphine nad other meds. Xrays neg. Pain mid back at L5-S1 level radiating into teh buttocks and scrotal area. Positive SLR bilat. Hopefully muscular but could be disc related. SEVERE PAIN!!!!!