Inclusion Criteria:  Able to read and speak English Have a low-risk singleton pregnancy with more than 24 weeks of gestation Have smartphone with internet access Failure to meet criteria for a diagnosis of MDD in the last two months  Exclusion Criteria:  Physical or mental disorders which would interfere with their ability to participate in the study High-risk pregnancy Give birth to a newborn at still-birth or a newborn with congenital anomalies and/or Medical complications that require special care in hospital Infant has a birth weight lower than 2,500 grams Infant has a 5-minute Apgar score lower than 7