question: my name is jen chen . i had back injured 2001 and back sore all that years, I am very healthy person 5'1 and 105pounds. i alway did joging every day for 1 hours . suddently last year 2010 i just did jogging  and i start had pain on my low back down to buttock, tailbone,thigh,calf and ankle. now i cant above to seat or walk for long period of time . my felt weakness and short breathing ,dizzy and my nail bed turn purple. but when i lay down they feel much better. I being went to emergency alot of times and they test all my blood test are normal and they also did ultra sound and blood test for blood clot came out normal. my concern right now does lumbar spinal stenosis can cause me no energy and weakness? I being went to chiropractic,accuputure,physical therapy and being seen orthopedic ,neurosurgeon and they just give me pain killer,patch,muscle relaxer,and nerve pain and none of them work and i had steriod injection back 2001 and current i am waiting for epidural injection. well i had took MRI on 01/2011  that show I just took MRI 1/2011 showed L5-S1  there is a broad-based left paracental disc protrusion which measures approximately 6mm in AP diameter which effaces the anterior thecal sac and impinges the descending left S1 nerve root. Resulting mild impingement of the exiting left L5 nerve root. the right neural foramen is mildly narrowed.also May 2011 i had took nerve conduction test and they confirm I had nerve pinched on L5-S1. being try to active by doing some walking but i cant above do for two block walking. i feel no energy,short breathing,dizzy,blur vision . and i feel want to pass out . i cant above to seat for 15-20min. how can i get my normal life back. please give me some advise.