Usually, as you become more experienced, your airsickness will diminish. There are some (very few) people who cannot seem to shake it off though, but usually they do not fly more than a few flights before giving up. If you have a PPL it is highly unlikely that you fall into that category. Even for experienced pilots after a break from flying you can feel airsick if its bumpy or you're experiencing a bit of "g" (particularly negative). I have nearly 6000hrs and very occasionally still feel airsick after a few weeks off. If, during your training, airsickness is becoming an issue then there is medication that can be taken (usually for a week) that is compatible with flying. However you MUST obtain it through a specialist in aviation medicine and not your local GP. As far as RW airsickness is concerned you are probably not going to be affected so much in an R22 as a C152, because as the previous posts suggest, the rotor will absorb many of the bumps that a fixed wing will not. Above all, do not worry about it! it is part of the great experience of being a pilot!
