No worries. This can happen to anyone when seas get more rough. From experience we know this never lasts longer than a few hours max, only the first day, if at all. It is a matter of getting used to the motion of the boat. Your skipper is regardful and happy to help you out. A good breakfast and lunch (full stomach, even if you don’t think so) do miracles against motion sickness. If still needed there are very effective pills or patches against motion sickness. Once used to the waves you’ll love them 😉