I have for over a year suffered with tingling throughout my body, now I feel slight numbness in the souls of my feet if I flex them. I do not feel the numbness when I walk. My doctor has been giving me B12 shots once. A month for the past year. They were helping. Now, I had a shot last week and it s worse than ever. Plus a lightheaded ness Tingling from head to toe with slight numbness. Pulled a muscle in my leg, went to emergency 2weeks ago, I explained the tingling, they said my blood test and X-Rays showed no sings of blood clots. Getting really bothered now. Can you advise?