Chronic sinusitis is a tough one. It can cause Eustashian Tube Dysfunction, which can cause a lot of the symptoms you describe.
I have what is called an "ear Popper". I got an RX from my physician. INS. covered it. You turn it on, stick it in your nose and swallow. Then repeat on the other nostril. wait 5 min and do it again. Your ears pop. It keeps the fluid from building up from the chonic sinusitis.
Perhaps you should ask your doctor about getting you an ear popper. And the wax build up could have definitely caused you problems, as well.
A great way to thin any mucus is hot water (but not boiling, just the hottest tap water, with a tablespoon of honey) sipped before it gets cold. It thins the mucus very quickly.
Those dizzy / off feelings can be a combo of ears/nose stuff plus anxiety of course. Put the 2 together and it's a recipe for disaster.
It definitely sounds like the winter you had wreaked havoc on you. We had a dry, snowy winter here, too and quite cold. Then spring came and everything bloomed at once and there was a lot of wind, blowing pollen from 400 miles away. ::sigh::
I check Pollen.com daily for reports in my area. I've learned that I have to start taking my allergy meds in February.
If I were you, I would not do any exercises, but I would definitely rest. Read, lay down, but no running around or exercising. Let your body heal. I think you'll like the allegra. No zoning out at all. No tiredness, no fog head, no speedy feeling because it doesn't have that pseudoephedrine in it. It's OTC now,too, it's that safe. I take 30 mgs....but some folks can take as much as 180 mgs. 30 works for me fine and I only take it in the a.m.