Do I need a chiropractor?

My shoulder hurts, not much, not all the time. At first, I believed I hurt a muscle and that it would heal in time, but it is now over a month and the pain is not diminishing. I considered seeing a doctor, but a friend [whose judgment I trust] recommended a chiropractor. I have never visited one, and have no... show more My shoulder hurts, not much, not all the time. At first, I believed I hurt a muscle and that it would heal in time, but it is now over a month and the pain is not diminishing.

I considered seeing a doctor, but a friend [whose judgment I trust] recommended a chiropractor. I have never visited one, and have no clear idea of what they do, or whether they may help me.

Please advise, pros and cons of each option.
Update: massage therapist - good answer

daisy - good answer, very informative video, thank you.
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