Chronic sinusitis/swollen gland

Hi everyone, after CT scan. ive been diagnosed with chronic sinusitis over 4months ago, took antibiotics but hasnt helped, my lymp nodes in my neck is constantly swollen, i keep getting bad headaches too, doctors says its because of the sinuses, my anxiety is sky high, blood tests are ok, no inflammation, i requested for an ultrasound today to check the lymph nodes, i worry so much as this has been ongoing since February this year. Any advice please. Kdj