Motion sickness. Exercise to cure this!

You can do a few things to try to help with motion sickness: Lay off caffeine, alcohol, and big meals before the trip. Drink lots of water instead. Lie down if you can, or shut your eyes, and keep your head still. Look at the horizon -- don’t read or stare at the seat in front of you. Find a better spot. Many people find relief by taking the wheel. If you’re not driving, sit in the front seat rather than in back. If you’re in a plane, sit over the wing rather than in the front or extreme back. If you’re on a bus or train, try to get a seat that faces the way you’re going. Add some distractions -- music, for example. Or eat something. Dry crackers may calm a queasy stomach. Suck on a lozenge. (Something with ginger in it may be especially helpful.) Light, fizzy drinks, like ginger ale, also can help. There’s some evidence that bands that put pressure on your wrist -- some send small electrical stimulation to a specific area -- can help, but other studies have shown that they don’t.

seek medical help if u dont get better. antihistamines should be the start