The best thing I can say is get another doctor. My rhuemy did a full scale of x-rays to make sure he didn't miss anything and would be patient about answering all my questions and that nurse would have gotten my foot up her butt.
When you see the doctor again be firm with him telling him that you need him to answer questions for you and that you want to know why x-rays weren't done to see the progression of your arthritis. This doctor seems to have no bedside manners and you are the one paying him so he should be interested in your well being. Please push to see another dr you can even tell your dr you want a second opinion as to what is going with you and he has to agree, there is no ands, ifs, or buts about it. Let us know what happens when you see him again and I am so sorry you are in so much pain.