Yeah, I think it is something everyone should do. . at least once!!Flying is often the smoothest means to move around the earth, and without a doubt the most fun, and the most spectacular. So was it fun? What did you do??? More details please! The 152 is pretty darn tiny, but I think you will find (though I have never flown a 152 myself) that in flight size doesn't really mattter too much. Wingloading plays a roll as far as how bumps are felt, and in truth so does the size of the aircraft, but generally if the air is bumpy, it is bumpy for all aircraft, and if it is smooth. . well . .its smooth! More importantly is that most of what people don't like about turbulence isn't the actual sensation itself, for most it is anxiety that is a result of the turbulence that I think makes most people feel uneasy, which seems to enhance the sick feeling. Of course if you are in any moving object and aren't paying attention, or don't know what to expect there is a chance you will get sick, generally this goes away quickly with more experience, especially good experiences, so at first don't go up on tehose crystal clear days with big puffy clouds, sadly the most beautiful days are that way becasue of convective activity and unstable airmasses. I don't have any tendency to get sick from flying, not even during aerobatics, but I have flown many people who do, and generally I find that it is nerves more than anything else, having an understanding of what is normal, and what the plane can handle (a LOT!), picking the right days to for the first few flights, and not developing too much pre-flight anxiety are big helps. There is also a neat device called the relief band that fits like a watch and apparently works wonders for people by providing an electric stimuli to the vagus nerve so if all else fails go up with one of these a few times, and hopefully in a short number of fligths you can wean yourself off of it. This is also good to have for use by passengers to ensure that they feel ok.
http://www.pilotmall.com/page/1/CTGY/100S!TX-EcoDragon