36 days ago I had a bad muscle spasm in left calf. Pain went into ankle,foot & toes. Foot & toes are still tingling,burning & numb but spasms went away. It hurts worse when cold & at night. Therapy made me cry & leg spasmodic sent to ER got 4 injections and nothing. Have to wear a boot, therapy. And nothing. Now I have blisters on left side of body. What REALLY COULD THIS BE?