This has happened to me so many times! When I was growing up and would go on trips with friends I would freak out and call my parents crying when I felt sick. I went to the beach with a friend and wound up feeling n* after going to an amusement park and I cried all night in the bathroom begging my parents to come and get me! I would cancel trips with friends sometimes because I was afraid of getting car sick. Eventually I discovered medicines that would prevent/help when feeling n* and even now, idk...15 years later I still carry a bottle of motion sickness meds around in all of my bags and I am constantly taking them! I take them every night before bed so I don't wake up sick, after meals when I go out to eat, and car rides that last over an hour and anytime I have to ride in the backseat...and I force friends/family to take them if they even mention not feeling well. I'll even force people I don't know to take them lol!!! So sad I know... This phobia really makes having a normal social life difficult...I hate traveling...I just don't do it...