The first Rheumy didn't test your ANA? Then getting a second opinion is definitely the right step. I think the Rheumatoid Factor test can be weakly positive in normal adults... just being positive doesn't mean much, the exact number will be more indicative of whether or not there is a real problem.
Check out the symptoms as found in the links below - make of list of any of the 11 symptoms you may have noticed to be ready for the rheumy.
Lynnwood, Lupus & Sjogren's Moderator, Dx: 2002DIAGNOSING LUPUS & LUPUS RESOURCES
"Life is far too important to be taken seriously." - Oscar Wilde