The effects of pregnancy on mental health were investigated by comparing the presence of depression, anxiety disorder, and misconceptions about pregnancy among pregnant and non-pregnant women. The sample consisted of 50 pregnant women (mean age 27 yrs), selected randomly from the antenatal clinic in King Hussein Medical Center, compared with 50 control women, matched for sociodemographic and educational background and age. All Ss were interviewed individually and asked to complete the Arabic Revised Beck Depression Inventory and the Arabic Revised State Trait Anxiety Scale. Open questions relating to conceptions about pregnancy and delivery were also asked. Results indicate that women who were pregnant had a significantly higher rate of depression and anxiety than women who were not pregnant. Significant correlations between some negative thoughts and anxiety were also obtained. The implications of these results support the idea that negative cognitive attitudes and beliefs may result in depression or anxiety disorders.