Hi Deamin. There are several tests out there for RA. One that is very helpful in people whose other tests are negative is the Vectra DA. Many of us have comorbidities. Be honest with your doctor. Explaining symptoms is sometimes difficult. If you explain your pain in relationship to your daily activities, then the doctor gets a better idea. For example, most days, I can brush my teeth, but I can't walk to the mailbox, and I can't fix a meal. So glad you reached out. Hopefully you will get some answers! Encouraging hugs! Mary Sophia (RheumatoidArthritis.net Team)