Joint pain?

I'm early in my 6th week, and I'm having a lot of joint pain. I know that the joints get loose late in pregnancy but didn't think it could happen this early. I have a small knee injury in one knee, but they've both been hurting randomly (especially while laying down), and now my never-been-injured elbow hurts. Think this is normal? I see the doctor in a few days, but the elbow seriously hurts. Trying to rest it, but it's hard to not use my dominant arm! I don't remember doing anything to twist it yesterday, so I've just been blaming pregnancy.