I would definitely look at hypermobility criteria, print some examples off, and take it to your doc. They may be able to refer you to a geneticist if they think you're in the EDS area, or be able to get you resources for General Joint Hypermobility. Hypermobility may cause joint pain, yes. Check in with you body also to see if anything else is hurting. If so, you may want to try getting a referral to a Rheumatologist.