I know that the RF test is for the Rhuematoid Factor. This can sometimes tell if you have rheumatory arthritis - but not always. Some people test positive and don't have it. I think it can also be positive in Lupus. I'm sure your doctor wants to test for any possible condidition relating to the joint pain in your hip. I'm not 100% sure of the other tests, but I wouldn't worry just yet.
Are you seeing a rheumatologist? Did your doctor give you anything for the pain? Don't lose hope yet. There are loads of treatments for everything these days!!