hello, I understand your concern over the issue. First of all you are RA positive(
rheumatoid arthritis) for more than 20 years. Good that you are taking treatment for it from
rheumatologist. RA is a slowly progressive
autoimmune disease, hope your are taking medicines on time that your doctor has prescribed. Do not change or modify dosage or any medicine without asking your doctor. I hope you are doing routine blood tests advised by your doctor every 3-4 months and do follow ups. The medicines work to slow down the progression of the disease which damages joints.
For the elbow, looks like there is accumulation of fluid that is leading to swelling and pain. The pain and and swelling shall be there for some time but it will reduce after treatment. So till then I would suggest you do as per your doctor says. As first need to see the extent of joint damage and other things before giving you cortisone shot. Because if there is need to take the fluid out and get it examined, then that should be done prior giving you the
cortisone injection if it is needed.The medicines you are taking for RA, keep taking those till you get the x-ray reports as your doctor advices. If the pain is extreme you can use pain killer spray for relief. Keep yourself active with slight exercising. And visit your doctor as soon as you get the results. After that your doctor will suggest you what next step to do.
Hope it helps. If any queries, feel free to contact. Stay healthy.