My husband started hurting in his upper stomach on the right. It radiates through his back. It started last week when he was on a flight. He had eaten a breakfast sandwich and got really nauseated. He was really misserable and drank some club soda thinking it would make him feel better. He ended up in the lavatory, throwing up the club soda. As he was walking, he started feeling better and thought it was just a bad breakfast sandwich. When he ate a late lunch, he got sick again. He was then driving a semi truck and had to pull over to lay down. He again, ended up throwing up. He's home now and really hurting. What do you think it is and do you think it could be too serious to wait to see the Dr. on Monday or should he go to the emergency room tonight (Friday)? Any help or suggestions you could give me would be greatly appreciated. Chrisitie