I can tell you that one morning I woke up feeling 'odd' and when I tried to get up, I felt dizzy. It took me minutes to get vertical but if I moved my head or looked up, I had vertigo. I had to be driven to the doctor and she told me my ears were clogged up. (Actually, I suppose it was the eustachion tubes.) And you know it's all connected in there: ears, sinuses, nasal passages....). Other times, my ears have popped because of the fluid and being partially blocked, so that's what I thought was happening with you. There could be other reasons but only a doctor could tell you exactly.
And the fatigue could be lots of things: meds, allergies from spring blooms, being anemic, being sick with sinus infection.....