<s>[INST] A few days ago my right knee and thigh swoll up and pain in that leg also noticed a lot of stuffiness in my sinus and flem. I don t have any insurance because I lost my job but wondering if there is something over the counter I can use. I am taking diurex right now [/INST] Hi Dear, Welcome to Chat Doctor. Understanding your concern. As per your query you have muscular pain along with sinusitis. Well there can be many reasons for symptoms you mention in query like rheumatic fever, haemarthrosis or seronegative arthritis. Joint swelling can also occur due to injury cyst like bakers' cyst. I would suggest you to consult ENT specialist as well as orthopedic surgeon for proper examination. Doctor may order CT scan for sinusitis and also for knee. ENT specialist may prescribe antibiotics like amoxicillin or penicillin along with decongestant or expectorant. Orthopedic surgeon may prescribe anti-inflammatory, muscle relaxant or may recommend surgical removal of cyst. Hope your concern has been resolved. Get Well Soon. Best Wishes, </s>