In view of potential adverse effects of the use of certain plant species during pregnancy, knowledge about the frequency and habits of using herbal medicines and preparations during pregnancy is important for all healthcare professionals who provide care to pregnant women. The aim of this study was to determine the tendencies of pregnant women to use herbal preparations for external and internal use and to collect their views and beliefs on the safety, efficacy and availability of herbal preparations in comparison to conventional drugs, as well as to determine their ways of informing about herbal preparations. The aim was to collect data on the trimester in which pregnant women had been using herbal preparations and how often on average, according to whose recommendation, whether their gynecologist had been informed about it or not, where the herbal preparations were bought and for which disturbances and/or for what purpose was each of them used. For this purpose, a questionnaire was used, which was filled out before the medical examination at the Department of Gynecology and Obstetrics of the General Hospital Zabok and the Hospital of Croatian Veterans in Zabok by a total of 102 pregnant women. The obtained results indicated that 56% of the respondents, most of whom were from Krapina-Zagorje County, had been using herbal preparations during pregnancy. Many of them used them on a daily basis (27%) or more than twice per week (20%), usually without recommendation (55%), and often without the knowledge of their gynecologist (48%). Although most respondents did not think of themselves as being sufficiently informed about herbal preparations that may be used during pregnancy, 60% of all pregnant women believed that herbal preparations were safe to use during pregnancy and safer than conventional drugs. The respondents most often used herbal preparations for dry and irritating cough, dry skin problems, urinary tract infections, sore throat as well as nausea and vomiting. The most commonly used plant species was almond, which was mentioned by 50% of pregnant women that had been using herbal preparations, exclusively for external use, while less represented ginger (27%), cranberry (25%), chamomile (23%) and marsh mallow (12,5%) were mainly used internally. Physicians (55%) and pharmacists (47%) were cited by pregnant women as the most reliable providers of information on herbal preparations, and the largest share of respondents also stated that they were buying herbal preparations in pharmacies (52%). It is therefore the responsibility of physicians and pharmacists to provide members of this particularly sensitive population with timely and complete information on herbal medicines and herbal preparations in order to avoid possible risks and to ensure their safe and effective use.