Back Pain

[Swanny86uk]

Hi,

For the past 6-7 weeks I have been experiencing a very strange pain in the left-middle of my back. The pain only ever occurs when I lower my chin to my chest or when I try to put my socks on while standing up (ridiculous I know!) I can feel the muscle pulling very very tightly. I don't feel any pain unless I move in a way where the muscle comes into play.

I'm at the gym quite often and i'm thinking I may have overloaded the muscle. I just wanted to know if this sounds like a strain or a tear ? Into my 8th week of pain and its not getting any better =(