I drink a 12 ounce can of Coke every morning with breakfast. I'm never a big soda drinker--but in the first trimester, I craved it, as it calmed my upset stomach first thing in the morning. Now I think it is just a habit lol, but I never drink any throughout the day. A 12 ounce can of Coca-Cola only has 35 mg caffeine. So, like everyone has said--moderation and common sense are key. : ) Don't stress too much about it--if it sounds good to you, have one now and then!