Background: Maternal behavior during pregnancy is crucial to her own and her infant's health, and as such, it is important to understand the nutrition and supplement habits of women during pregnancy and what informs those behaviors. Aim: We aimed to assess the information seeking habits, attitudes, and beliefs about pregnancy-related nutrition and supplementation among pregnant women in the United States. Methods: Qualitative study using key informant interviews with pregnant and recently pregnant ( n = 21) US women. Themes related to concerns, attitudes, behaviors, and information seeking habits were extracted. Results: The mean age was 31.9 years and all had at least a university degree. Two major themes that emerged: (1) nutrition information-related attitudes and beliefs and (2) food and supplement-related attitudes and beliefs. Pregnant women in the US were underwhelmed with their health care provider experience when receiving information about pregnancy-related nutrition and supplementation. Nutrition was most often addressed in a reactive manner while women desired a more proactive approach. As a result, they conducted their own research using the internet as their primary tool, and ultimately made nutrition and supplement decisions based largely on their own instincts. Conclusion: Women interviewed for this study encountered barriers to pregnancy related nutrition information from a lack of clear communication from their health care provider and ambiguity and inconsistencies in information within and between sources. Women relied on themselves for information seeking and nutrition related decision making throughout their pregnancy.