Yes, that sounds familiar. It probably comes from RA in your shoulders and perhaps your neck and if it isn't directly related to joint pain, I find that your muscles gets really tense and painful from trying to accommodate what's going on in your joints. Have you just started methotrexate? It takes about 6-8 weeks to really kick in, so you may have to be patient for a little while longer. If you been on methotrexate for longer than that, go back to your doctor and talk about maybe increasing your dose or discuss options for adding e.g., as small dose of prednisone or switching to a more effective DMARD. You can also ask for a referral to a physiotherapist who could help you with some exercises that may help in this area, as well as recommend a collar that you can wear part of the day to give your neck some support and rest. The physiotherapist may also recommend a different pillow that can give you more support at night. Frequent applications of a beanbag heated in the microwave can also be really helpful (you'll find the rice/beanbags in a supermarket or drug store).