I know that many moms-to-be like to avoid medications altogether for fear of dousing their babies with pharmaceuticals. While there's been conflicting data on antidepressant medications and adverse effects, it does appear that a class of antidepressants called SSRIs have fewer side effects than the disease itself. In fact, most human studies show that SSRIs have not led to an increase in birth defects.
Most experts believe that the SSRIs need to be taken with a side dose of professional therapy to be most effective. And remember that when medications are "medically necessary," avoiding them only prolongs the agony. Ultimately effects on pregnancy seem to be the same for those who treat depression with medication and those who don't. There's no reason to suffer when you don't have to.
Find out more about this book:YOU: Having a Baby: The Owner's Manual to a Happy and Healthy Pregnancy