Nausea after eating

Ok so I'm 5weeks 4days today. I woke up feeling VERY hungry so had breakfast but then about half an hour later i felt sick and nauseated. My husband drove us into town and i felt sick from the motion of the car and smells from cafés and car fumes etxmc were making me feel worse. Then went food shopping and again i felt sick thinking about food. When i got home i suddenly felt really hungry and ate soup and bread. Now I'm feeling nauseated again!!

It's only started today and dreading it getting worse than this?!