I had an L5/S1 micro discectomy 6 weeks ago. Before surgery, I had numbness and tingling down my left leg to my toes. Immediately after surgery, the numbness and tingling went away until yesterday. Is there something that would have caused this? Yesterday, I lifted my 35 lb toolbox about 60 feet. Before that I have been able to avoid lifting anything over 10 lbs. Could this one incident have caused my numbness to return after 6 weeks? Is there anything I can do (besides a 2nd surgery) that will make the numbness go away?