Sleep disturbances are prevalent among, pregnant women, among them sleep is more fragmented during the third trimester, and could be associated with increased ability to remember dream's content. The aim of this study were to compare recall, and the contents of dreams during the three trimesters of pregnancy according to Gruen's Scale (Scale Subjective assessment scale of sleep and dreams), and to compare this with a non-pregnant women. An observational cross-sectional study was conducted during 50 months. After oral informed consent, a demographic survey and the Scale of dreams were offered and self-administered by parti-cipants. Assesses frequency of recall and other dreams characteristics. A total of 621 questionnaires were available for analysis, 320 pregnant and 301 non pregnant women. Pregnant women showed statistically significant decreased of recall, stirring, pleasant, erotic, strange, and vivid dreams compared with non pregnant women. Conclusions: non pregnant women have mayor recall of dreams and other characteristic in comparison with pregnant women. We did not find differences between the various trimesters.