Hey, you donīt have to worry about that. normally it is different whether your fly as a passenger oder as a pilot. you will see. i know some guys from my gliding club who still get sick when flying as passenger.
But i know some, who still get sick after about an hour of flying by themselves. you could handle that by taking certain medications against travensickness (but ask a doctor because some have sideeffects!!!). I would wait what happens and then decide.
have fun with your training and donīt worry.