Pregnancy presents the most important period in every woman's life, partially for the number of physiological adaptations she is going through, partially for the expectance of new life. Diet during pregnancy is considered as one of the most important external factors affecting health of a child further in life. Despite of general belief that nutrition through pregnancy is adequate and is characterized with better nutritional habits, number of research are showing this is not the case. Additionally, unfavourable diet is together with advanced maternal age, high pre-pregnancy body mass index (BMI), and excessive pregnancy weight gain considered as significant risk factor for adverse pregnancy complications and outcomes, especially in terms of newborn. Randomized, observational, prospective, long-term study encompassed pregnant women from the area of city Osijek, Eastern Croatia. Based on 24-hour dietary record quality of nutrition was assessed for two subgroups of women: the first group of normal pre-pregnancy BMI and excessive pregnancy weight gain, and the second with overweight/obese BMI (BMI ≥ 25 kg/m2) and excessive weight gain. The results have shown energy deficient diet throughout gestation, characterized with unbalance between intake of fats and carbohydrates. For women starting pregnancy with normal BMI, from the aspect of pregnancy outcomes higher importance has the balance in specific carbohydrates. This is especially emphasized in the first trimester. On the other hand, for women at-risk, who start their pregnancy with overweight/obese BMI, from the aspect of pregnancy outcomes higher importance has the total intake of fats and specific fatty acids, especially during the third trimester.