First time pregnant... Do you question every thing you eat?

My husband and I recently found out we are 9 weeks pregnant. We are so excited!! It's our first baby and we couldn't be more thrilled. Recently we went to get an ultra sound done and we both started crying seeing our little baby in my tummy. It was so surreal.
The not so fun part is that I'm nervous about everything I eat. Am I the only one? I google almost everything and read almost every label. I know cheeses, undercooked meats and raw seafood are among the things pregnant woman should stay away from, but what are some other things that are a big no no, and you question?
Thanks guys!