BBT & Shiftwork

Ok so after a couple of months of TTC, I'm going to start tracking my bbt. The problem is, I'm a flight attendant & work varied shifts including very early mornings & nights. Does anyone know whether this affects bbt? Bearing in mind I often fall very short on my 8 hours sleep "a night". The same goes for ovulation & worldwide time differences. Do you think my overies get jet lag?!