My head is playing those mind games with a vengeance now: trying to tell me that one won't hurt, that I could control it, why give up something you enjoyed. These tricks are way worse that the cravings, which are manageable. Approaching week 3, I realise I am still very vulnerable.
Anyway, clinic yesterday had normal CO reading of 3ppm as expected. CO detectors at work and home show nothing so I'm putting the unusual high reading last time down to an aberration.