Many women are taking the drug fluoxetine (prozac) either when they fall pregnant or while they are trying for pregnancy. There is some research into the outcomes of pregnancies in women who are using this common anti-depressant. There are two concerns with regard to pregnancy and Prozac - firstly whether its use in the first trimester is associated with any risk to the developing fetus - is there an increased risk of congenital abnormalities? Secondly, does it affect the outcome of the pregnancy or the subsequent development of the fetus.