What Causes Numbness In Feet In Case Of Deformity At L5 Level Of Spine?

I was told that I have a deformity of extra bone at the L5, that my nerve endings are moving over it. Not real sure of anything else as I went a short while after the death of my younger sister in hospice at my home. I first experienced my feet when taking of tennis shoes , my feet would feel like they were asleep without tingling...then my upper right leg after shopping became numb like I had a shot at the dentist office. I left his office, hearing what I typed above and asked if I needed surgery, he said no I think. I have not been back, this has been over a 4 yr period and now when sitting my feet are feeling as if they go to sleep, I get up start walking and they wake up. Can you give me any idea what is wrong with me?