In mid february, while prepping my bag for a trip to Budapest, I started hyperventilating and it never stopped. I have air hunger/hyperventilation 24/7 now, and every minute taking deep breaths and/or yawning. Also chest tightness and lump in throat. I heard some things about co2 imbalance and I tried the Buteyko method but it didn't help much. Does anyone have experience with this too and would like to share? I would be so grateful.