How To Treat The Numb Feeling In The Arm?

painful curiosity I have been in pain for the last week and half. Its come to the point where I have to concentrate on not crying. this has started with tension on my back under my left shoulder blade. I ve tried typical streches thinking that I just slept wrong. next morning the pain grew to my lower back and into my left arm. I have had a needles feeling in my arm and numbness in my middle, ring, and pinkie fingers of my left arm.. but for the past 4 days it has reached most my body but has been centralized around my joints. this has make life very difficult, I have lost alot of strength in gripping and holding, just walking/standing up hurts. I have 3 kids to chase around the house and I have difficulties even picking up a full gallon of milk, opening doors, and going down stairs. I have alot of pride and have not wanted everyone to know that I have become weak, but the pain has reached my limit, its effecting my thought process. I work in the security industry and have had to take days off because of this endeavor, I just need to know if this could be related to my mothers hereditary sclerosis? (curvatures of spine, not ms) and if its possible if I need to be seen by a neurologist, or if I should just wait it out and hope it passes.