Negative tests for rheumatoid arthritis, positive ANA tests, and terri

For the past 3 months, I've been experiencing severe pain in both knees, on the inner side. It started suddenly. The pain is burning and throbbing, the same in both knees, and radiates down to my calves. The pain intensifies, especially at night. I can't fall asleep because of the pain, or I wake up with pain at 3 AM. Even when I rest during the day, I still feel pain. During the day, it's much better. I can walk and bend my knees without mechanical pain. I feel a constant burning sensation and tightness under my knees, and my calves feel heavy, but this doesn't hinder my walking. My RF is < 10, CCP < 16, Erythrocyte sedimentation rate is: 1, CRP is: 0.3. Doctors say my rheumatism test results are good. However, my ANA Screen, IFA is positive, ANA PATTERN: NUCLEAR, HOMOGENEOUS, ANA TITER Value 1:320. I haven't slept properly for 3 months. The pain feels like someone is burning me with fire. Has anyone encountered a similar problem? Please help.