Background: Pregnant women experience a set of biological and psychological disturbances. The aim of this study was to assess the appearance of depressive symptoms and suicidal thoughts in pregnant women during the third trimester of pregnancy. Subjects and methods: A total of 110 pregnant women were included in the study. All of them filled out an anonymous questionnaire about sociodemographic data, Edinburgh Postnatal Depression Scale (EPDS), Beck Depression Inventory (BDI), and Beck Anxiety Inventory (BAI). Results: Study participants were between 18-46 years of age. 45.45% of the pregnant women were between 37 and 39 weeks pregnant. According to the EPDS, the risk for perinatal depression was observed in 29 (23.36%) pregnant women: 15 (13.64%) of them had a total score on EPDS from 10-12, and 14 (12.72%) had a total score of 13-20. A higher score on both Beck scales was characteristic for pregnant women with a higher risk for the development of perinatal depression based on the results on EPDS. The prevalence of suicidal thoughts was 2.73%. Conclusions: Perinatal depression is a state which should be given more attention. The recognition of perinatal depression during pregnancy allows health medical workers to observe pregnant women at risk and then to make preventive and clinical interventions. The risk for perinatal depression is higher in pregnant women with more expressed depressive and anxiety symptoms. Pregnant women with suicidal thoughts are more anxious and depressed.