We are glad you are working with your doctor as that is your best source of medical help. As to swelling on
the sides of your nose, our body can , certainly react
in unusual ways, can't it. Here is an older question of a similar nature answered by a MedHelp doctor that I'm attaching for you to read. https://www.medhelp.org/posts/Family-Health/Odd-swelling-on-side-of-nose/show/228206. He suggests a sinus CT. Has this been offered to you or are they trying the Flonase first?