I had terrible motion sickness in the beginning. On my first flight, I remember looking around the airplane trying to figure out what I could throw up into. Luckily, I did make it onto the ground. I thought this might prevent me from becoming a pilot, but I started researching it a lot. It does go away. I got an instructor that was also very motion sick when he started flying so he always said "if you ever feel sick, tell me and we'll get back on the ground because you can't fight throught it; it will only get better once you get out of the plane." I thought that was good advice. There is no sense in flying around wasting precious flight time when you just feel terrible and can't learn. Just keep your banks pretty shallow in the beginning. Your body will definitely get used to it. Also, even when your body adjusts, don't do anything like letting someone make the pen float in the air. Someone did that to me once and I just felt awful. Good luck!