The following videos are some tips to release the upper-mid back to avoid the pain. I got them from youtube, so simple, easy and trust me it works!
Try the other ones as well..
This is a twisting exercise..
For women, the body shape is one of our asset. Maintaining our body shape by keeping our back and shoulder straight to have a maximum mobility should be one of our concerns. When we are sitting, walking or standing, we should keep our body up. It may avoid the pain as well. Have a try!
Cheers,
Myth