Edd,
Don't worry about the air sickness it is something which will pass with time. I have known a couple of guys during pilot training in the Air Force who were ill for a while.It is part nerves and part getting used to it.
As for the ears. the greatest pressure changes in the atmosphere occur in the first 25'000 feet. Someone correct if I am wrong but the pressure at 25'000 is 1/3 what it is at sea level. So you can see that having your ears "pop" is very natural due to the large differences. As redsnail says the "valsalva" is a good technique if you are descending. Just as you do if you are diving in the deep end of a swimming pool to ease the pain in your ears. When climbing i find yawning, swallowing or moving your jaw from side to side can relieve any pressure/discomfort. If you have a cold don't fly!! Finally they should check your ears on any medical!
Cheers