Nausea is very common in the first 12 weeks of pregnancy. If you already have some disposition to travel sickness, the nausea will be worse. There is some evidence that ginger root helps with the nausea. Taking it in the form of ginger tea before traveling may help. Whether to work or not is a decision you have to make for your self, taking into consideration the availability of jobs, family support after the baby is born, etc. Good luck with the baby.