Thanks Whirlybird re: the medication advice. Didn't think of that, and I really don't like popping pills for anything if at all possible.
To be honest, if the instructor had asked me before hand if I was ok to go up I would have said I'd be fine as I never have suffered before. I was warned it would be a bit bumpy, but thought nothing of it.
I agree about the sick bags, and will have a supply next time. My instructor was very sympathetic when up there, and I was fine once we got back down. And I didn't actually 'vom' thank god.
Probably just one of many of surprises and challenges I have ahead over the next many hours to come!!
Cheers
Mark