It's been more than 7-8 months since I've been suffering from tingling sensations. On my backside, thighs, arms and feet. Pain in heels. Had low of levels of vit d and b12- 181 and hypothyroidism  so Dr prescribed medicines. I am taking medicines Since 6 months. I've taken b12 injections five times now. I still feel tingling sensations on my arms, right side on the back and legs. After taking b 12 injections..there's pain on the bottom of my feet below the toes. After taking b12 injections last time...i felt burning sensations around that area. What should i do? How can i recover from this ?