This is third-hand diagnosis by a GP of an ECG he's never seen. The flying analogy would be a flexwing microlight pilot with experience of MS Flightsim, shooting an approach into the old Kai Tak in a 747 via telemetry, so take what you read with a large pinch of salt, but...
It's sounding a little like you have an isolated Q wave in lead III. As you can see from the link this is not likely to be significant in the absence of symptoms or other ECG changes:
http://www.madsci.com/manu/ekg_qwav.htm
Better get it checked out though!
Good luck,
QDM