RecruitingBehavioural interventionMichigan Healthy Mom (MI-MOM) Pregnancy Improvement Web Application TrialThe purpose of this research study is to see if using the MI MOM App improves pregnancy and postpartum health. There are two study groups, where one group is "treatment as usual" and the other is the "MI MOM App" group. Both groups will be asked to answer questions about their pregnancy health. Researchers will also retrieve vital records and Medicaid claims information related to pregnancy for both groups. Those in the "MI MOM App" group will receive mobile web app content and text messages with informational links and links to videos and micro-interventions. They will also identify up to three close friends or family members who will be invited to receive text messages. Those in the "MI MOM App" will also have the option to contact a community health worker as needed.