Should I worry about a positive ANA and my RF factor number?

[Mpa0030]

I'm 30 years old and just received some blood results about my sedimentation rate, rheumatoid factor, and ANA. My doctor wanted to get me checked out because she has suspected that I could possibly either have lupus or rheumatoid arthritis due to having weakness in my left arm and weakness and numbness in my left ring and pinkie fingers. I have been feeling very tired on and off for the past 4 years and my left arm has these flare ups every 6 months or so. I am very confused and worried about this due to the fact no other doctor has wanted to test this before. My consult isn't until Wednesday, but I just would like some piece of mind or someone who could explain this to me. Should I be worried?
My sedimentation rate was 22, my rheumatoid factor was 36, and I am ANA positive.
Any thoughts would be appreciated. Thank you!