I eat one a day, it helps keep me from indulging on chocolate and also is an extra dose of calcium. I make banana shakes with one cup of milk, one banana, two teaspoons of sugar, a cap full of vanilla extract and some ice. I learned that when I go grocery shopping I try and stay away from the junk food isle. It is a very tempting isle for us pregnant women to walk down. I try walking around the fruits and vegetables most of the time a few things catch my eye that I like better.
Mangos are very sweet and can help that sweet tooth.
Or you can try dried fruits they can also help that sweet craving but be careful they can have alot of sugar. Think of chocolate as something that makes you sick to look at. I'm craving a little bit of peanut butter on a green apple or celery. Like many women I crave chocolate. Another alternative to sour cream is blended or whipped cottage cheese.