Well,let me think...that was a long time ago...
I remember feeling very fatigued, and having nausea at random times throughout the day
and there were a few things that I loved before I became pregnant that made me queasy after,but I believe the nausea comes from hormones flooding your system.
There can be certain things that will give you heartburn later on ,however,but you'll figure that out pretty quickly.
My mom didn't throw up with any of us either, so hopefully you'll follow your mom's pattern as well.My doc told me never to let myself get too hungry,and to keep good old fashioned saltine crackers in my purse and eat a few when the nausea hit,and to eat a couple as soon as I opened my eyes in the morning,and it really did help.
SO ditto on what everyone else has said, food plays a minor role,but the nausea has to do with hormones,and it varies with the individual.AND if nausea and vomiting becomes severe, contact your doctor!