Is this even possible?

I had my two week post-op check today and everything went well. Hubby and I then drove to the beach for a mini vacation before I start back to work. After riding about three hours I started to get nauseated. A band across the top of my abdomen started to hurt and I felt bloated. It kept getting worse which was odd because I hadn't experienced this before. Finally I decided to recline my seat. As soon as I did I did I started feeling better. Soon I was back to normal. Can sitting upright too long cause this? On the way home I think we will be stopping for stretch breaks.

I would assume this is pretty normal. Things were felt "off" for me for quite awhile after surgery. Good luck! :)