Muscle spasms. Help. i feel scared.

I was diagnosed with paraspinal muscle spasm more than a month ago I started medication and heating and it improved to an extent that now I can move around. But the pain in my lower left back hasn't cured yet. Now I feel slight tingling and numbness in my left leg when sleeping or sitting. And I feel a pinching sensation between my both shoulder plates. I feel nauseated however I never vomitted. I feel a lumpy sensation (but can't feel any lump from outside) in my left abdomen lower part. When I'm walking I feel alright. At times, I feel too exhausted by even a little bit of walking. I feel anxious. The pain sometimes runs into my left hip and my left leg also. I feel a burning sensation sometimes in my back and neck. I got an X-ray done and the doctor said the space between my tailbone and upper block of spine is less compared to others above it. He prescribed a few medicines. I feel suspicious about my condition. Please help. I feel scared.