Hi there....the uneasiness nausea dizziness your are feeling travelling could be motion sickness. There are many methods to overcome this. First try conservative measure like avoiding window seat, avoid having heavy meals or foods just before travelling(eat at least half hour before), try to avoid upper bunkers, try avoiding looking outside the window. If these measure do not help, then you can visit a general physician who will be able to prescribe you medicines like scopalamine, domperidone which will help overcome any motion sickness or nausea