Suggest Treatment For Shoulder Pain

I had some pain in my shoulder/ arm and went to a massage therapist and she worked just on my back and arm. she was very harsh but being my second ever massage I figured it was normal to hurt. It is now 2 months later and the pain behind my left shoulder blade is a daily constant pain... 6/10. I don't know if it was something that happened during the massage. I remember coming home and saying that spot hurt from her massaging. It didn't hurt before I went there and my shoulder pain is still there just not as bad 2/10 most times with the odd sharp pain.