When it comes to the amount of supplementation you need, follow your doctor’s orders. More is not always better. An excess of certain nutrients can be harmful to your developing baby. Don’t get caught up in the belief that if some is good, more must be better. Take only what your doctor prescribes. Also be cautious about any herbal supplements or over-the-counter pills you might be taking. And talk to your doctor about any supplements you might be taking.