Sinus Medication Solution

Does anybody have any information (or can direct me to a website that does) about the relationship between autoimmune diseases and sinus infections? I don’t have an official diagnosis for a certain autoimmune disease since the docs are still trying to figure out which one, though I have a lot of lupus symptoms just no positive lupus test, only positive ANA.
I have a history of chronic sinus infections (already had my sinuses drained once) and allergies and I have noticed that when I have a bad sinus infection and get on antiboitics I feel so much better after about 5 days. Not just relief from the sinus issues, but also from many of the autoimmune symptoms (fatigue, aches and pain). Just wondering if there is some correlation between the two that may help me get a diagnosis and some long term relief.