How old are you ?
If you are pregnant and (assuming not getting an abortion by what you have said.)
You'll want to start out by cutting out a lot of sugary foods. If your hungry for a snack, then fruits and veggies are really good choices. Cut up and put in a container or a baggie to throw in your bag if your on the go is really good (its what i did when i was pregnant with my son last year) I even put Cheerio's(the honey nut kind, b/c it was my favorite) in a baggie if i wanted something just slightly sweet and healthy to fill that sugar craving. More or less follow a national(wherever you live) food guide. Pop is ok sometimes, but if its just the fizz that your after, why not drink naturally flavored carbonated water, which would have less sugar in it. Watch for salt content( you'd want to watch your blood pressure). Also too, its better to eat 6 small meals a day then 3 big ones(during pregnancy and when not pregnant lol) if there's anything else you want to ask me just e-mail me here