Hello, and I hope I can help you today. Many women find out they have become pregnant after ingesting alcohol, food, or medications that we do not recommend taking during pregnancy. However, in the very early stages of pregnancy, the fetus is not yet developed enough to be at risk in the same ways as it would be when the body and brain have begun to develop. In your case in particular, Duromine, is a mild stimulant that makes your heart beat faster and raises your blood pressure. For those reasons, it is not recommended to be taken during pregnancy, however there is no evidence that it or the class of medication that it represents cause any form of birth defects or harm to a developing baby. So at this early stage of your pregnancy, you not need to worry about accidentally having taken Duromine. In the meantime, you can prepare for healthy pregnancy by avoiding alcohol, eating a well-balanced diet, and purchasing a multivitamin that is designed for pregnant women (prenatal vitamins) I hope that I was able to adequately answer your question today, and that my advice was helpful. This for the rest of the pregnancy, Best wishes Dr. Brown