Pregnancy is a stage of many transformations in the lives of women who will become mothers. This article aims to identify emotions expressed by pregnant women in the third trimester of pregnancy. Qualitative research was carried out through an interview with thirty pregnant women who were in the third trimester of pregnancy. The participants underwent prenatal care in Basic Health Units in municipalities located in the Far West Health Region of Santa Catarina. The results of the study demonstrated that there was an increase in anxiety during pregnancy. Among the causes listed by the participants, reports of proximity to childbirth, clinical conditions, insufficient knowledge about the gestational period, insomnia and history of abortion prior to the current pregnancy stood out. The qualification of health professionals to identify signs and symptoms of emotional changes is a preventive possibility for promoting a healthy pregnancy and postpartum period.