Not sure about the board process and all the formalities, but in primary I was never airsick except for passive airsickness in spins. In T-45s, I never got airsick until TACFORM stage, where I puked through every flight. I was very nervous about this when BFM would start, but to my surprise I didn't even get passively airsick. I had no issues with airsickness in the FRS or fleet from then on (also, T-45 TACFORM is not how it's done in gray airplanes). I seriously thought I was done with this community during TACFORM. Everybody is different, but it is possible you will get over it. Don't quit until you truly are unable to continue no matter what.