In the same boat. JAK2 negative. Now what? My stress and worry are getting the best of me. I don't go back to hemotologist until 7/11/23 - but my numbers swing like crazy - HGB, HCT always high, with yo-yo WBC. Ear ringing and dizzy are most irritating, then the exhaustion and day sweating - I don't at night, or at least I don't think I do. What could possibly be next? I assume she will be looking for a secondary cause. What should I expect?