Can marijuana affect myofascial pain?

I was recently told that pain in my legs (can be very severe at times) might by caused by a case similar to fibromyalgia or some other myofascial pain syndrome. I know a common theory regarding fibromyalgia is that is has something to do with dopamine, serotonin, or other endorphins in the brain. I also know that marijuana is known to effect many of the endorphins in the brain, so i ask this question; is it possible marijuana could be having an affect on myofascial pain? The pain did start occuring roughly around the time i began smoking marijuana and has continued sense. The amount i smoke varies, averaging around once every 1.5-2 weeks. I know asking for medical advice, is looked down upon, but i do not feel comfortable speaking with my regular doctor about such things. Any advice is appreciated, i promise i won't sue ;)