There was a guy at my FTO who suffered from quite bad air sickness, he was offered a de-sensatization flight. From what I heard, it consists of throwing you around the sky, you do throw up and you just deal with and somehow it helps, the RAF have used that method as well. Some believe in it, some don't. There is a very common fear of being sick, I have never been sick whilst flying, but I think it's the idea of it that worried me more than if I had actually been sick.
It can be a bit of a shock the first time you go up on a rough day, but count yourself lucky that you got to experience that early on so at least you can be well prepared! Good luck you'll be fine - the more you go up the less you'll worry about it
