Driving Test Disappointment

Just so you know, I failed my driving test last Thursday. I had done quite well, having made it through all the hard stuff and was on my way back to the starting point, when, for no reason I can come up with, I made a right hand turn and stayed on the right side of the road! The Examiner told me to stop the car and look at where I was.It was only then that it hit me, I was driving on the wrong side! He said I would probably have passed except for that outrageous blunder! Well, I wouldn't have given me a license either, after that. I'll have another go at in September. Wish me luck!