You can't afford NOT to go to the doctor. If your disease progresses untreated, you could have irreversible damage and complications. Immediate treatment is key.
New studies have shown that people can have RA for 10 years b4 having a positive RA factor. My sed rate was normal for years but has been high to barely controlled for 2 years. My RA Factor is negative. But my joints tell a different story. I have an inflammatory arthritis. It's a waiting game for me. I have started treatment with Methotrexate (MTX) with fairly good results.
Having an autoimmune disease is a stress, a burden, & confusing, but it's not a death sentence. Like you, I want a diagnosis NOW. I have 1 known disease & Undifferentiated Connective Tissue Disease-symptoms of several of them. Not all diseases present clearly as 1 disease or another. All of these diseases have some overlapping symptoms making it harder to diagnose them and sometimes there is no clear answer. Find a doctor who is knowlegeable, explains things well, and LISTENS to you. Ask him the questions that you asked above. Be patient. It is important to be calm & try to relax. Nothing will happen quickly. There is no such thing as a cookie cutter RA or autoimmune disease. No 2 patients are alike, although we have commonalities. I would suggest finding an RA support group. It's important not to focus on differences(but make a mental note of them) but to look for similarities and to lend each other support. But if you find that you have little in common with their experience of joint pain, perhaps try the Lupus (SLE) group. This doesn't mean that you have Lupus-just that they have such overlapping symptoms that you may hear more similarities & may feel more supported. Every group is very different depending on the other members, how long they've had the disease, their knowledge, their response to treatement. Be careful in support groups to not allow yourself to feel responsible for anyone else; you need to focus on you, your coping, & on controlling your disease. Get pamphlets from your doctor on your disease. Educate your family. If possible take them to a support meeting if you can. Talk with them. Let them know how your disease affects you. These diseases are hard to understand. You may need to give them some time to adjust.
Lastly, REST every day. Keep moving. Try to stay positive. If you feel depressed let your doctor know and know that you aren't alone in any of this. There might even be an online support group. I don't know-I've never looked. Good luck and get better.