be afraid (seriously, I would be ready for a delay on your package) but that said, a good friend of mine got waivered a couple months ago for sinus-related issues. The only problem was that it came from his own pocket when he had to go see a "specialist" for a recommendation. It was then sent out to BUMED 32 for review and proceeded to get lost for 4-5 months in a pile of stuff in our unit YN's inbox.
ALSO (another "that-said") one of the LT instructors at my unit didn't make it through Primary due to some sinus problems associated with a nose injury he had playing rugby at the boat school. Not sure if it was inability to valsalva or what (he didn't ellaborate), but he was having enough pain just flying around in the T-34 that he had to stop and ended up lateral transferring to the nuke community. Something to think about, and I would concur that you should be up front and honest with your examiner.