Hello Christopher and welcome to the forums at Pilot Journey

This will not be a problem at all.  I went through the same thing.  Once your body is is used to the ups and downs those issues will go away.

We humans have been only going forward and backward and not used to ups and downs 

Yeong,

First off, congradulations for taking the first few steps.  I hope that you have gotten over your first set of butterflies and have chosen to continue. 

My suggestion, although maybe too late now, is to take a flight with another instructor.  If the last instructor made you feel uncomfortable, you may need another teacher.  Remember, YOU are paying the instuctor.  He should make you feel comfortable and create a positive learning enviroment.  If he doesn't, you will not learn as well, if at all.

Brian

I know this is an old thread but I just joined and saw it. I'd like to post a response that I feel may help anyone who reads it, not just the original poster.
Notice he mentioned that the uneasiness went away as they got closer to the ground. It is common among those who are nervous or fearful to be so only when high up, not when merely a few hundred feet up. (Not counting those who are afraid of heights.) I think it has to do with the fact that at higher altitudes there is the illusion that the plane is not moving forward; it appears to be suspended in the air. Thus the anticipation of falling. At low altitudes you can see from ground references that the plane is indeed moving forward rapidly. At high altitudes if you pass small clouds they too provide visual proof of forward motion. We've been conditioned to accept forward motion as safe because we ride in cars, trains, bicycles, strollers and so on from infancy.

that actually makes a load of sense Mike, i am fearful of my first flight, but i do try to prepare, i doubt anything prepares you for it though!