Always in pain.. what could it be?

Hey! Just trying to get some advice. I’m 22 and I have had back issues for a while. My back hurts practically every day. My SI joint slips out of place a lot, because of uneven leg lengths, causing my right hip &under butt to hurt. I have neck pain a lot. For the past 2 years I’ve had problems with my right shoulder (went to orthopedic surgeon- “nothings wrong”) It has less range of motion and is constantly in pain. I have tendonitis in my right wrist, stress fractured a bone in my right foot, I think I have plantar fasciitis. Also, I had a joint in my right knee out of place a little over a month ago, had the chiro fix it, then I fell in a inline skating race a month ago which caused it to come out of place again, and since then it has came out again twice, and I am still in pain even a month later which seems odd. Anyone heard of anything having to do with pain all on the right side?? My mom thinks I might have fibromyalgia because I’m always in pain- asked a doctor but she kind of ignored it. Tested negative for RA and Lupus… any ideas?