I think everyone feels the same way you do at some point during their pregnancy.
It's quite common not to have very many or any symptoms at all in the first few weeks. I felt great until about 7.5 weeks with this pregnancy, but with my first I was sick from literally the moment I got a positive pregnancy test until about 19 weeks!
Here is a list of food safety things that might help.
Pregancy Food Safety - NZ
I was quite relaxed about food and tended to only stay away from alcohol, smoking, raw seafood and things that weren't fresh..
Congrats on your pregnancy! There is a thread just for mums due in January 2010 that you could have a look in, there are lots of supportive women due around the same time as you that will happily answer any questions you have.
Oh and welcome to Ohbaby!
Eta: Fixing stupid preggy brain errors, twice!
Edited by neeandsam