hi, i have been suffering for several years with headaches pain in the eyes and eyebrow area and getting coughs colds flu regularly plus always feeling lightheaded. 4 months ago the doctor said i have chronic sinnusitis and need surgery. i had surgery and and did everything the doctor told me to, and have been to check ups regularly, and the doctor says everything is working order, however i am always ill and always have green mucus and the headaches have returned and the lightheadedness just wont go! please can u help me and tell me what is going on?