Very quick post, as I feel too awful to sit at the computer for long.

Day 4 of the latest increase and, exactly as per the pattern, I'm horribly dizzy and having real trouble breathing. Managed to work through this stage last time, albeit at home rather than in the office, but just can't do it today. Need to lie down most of the time to ease the breathing, and even when it goes down a bit, the effort of sitting up is just exhausting.

God I feel pathetic.