Welcome to Susan's Place. I haven't had FFS but I have had issues with swollen lymph nodes and surgery. If it's your lymph nodes, you should see a doctor about it because swelling indicates an infection. In my case, I was able to treat them with heat but antibiotics may be in order. If it's swelling as the result of surgery and not the lymph nodes, the swelling may remain for a year or more. My body tends to really swell as the result of surgery so I may see indications well past a year.