Inclusion Criteria:  Pregnant with a single fetus 34-36 6/7 weeks pregnant (calculated from anticipated due date) No other living children and no prior breastfeeding experience Plan to breastfeed exclusively for at least 4 months At least 18 years old Plan to deliver baby at Magee-Womens Hospital of UPMC Healthy (no major medical or pregnancy condition which would constitute a high-risk pregnancy)  Exclusion Criteria:  Women with contraindications to breastfeeding, as specified by American Academy of Pediatrics, including HIV+ status, human T-cell lymphotrophic virus, etc. HIV status will be assessed by history (maternal self-report of diagnosis). Conditions known to significantly adversely impact maternal milk supply (e.g., breast hypoplasia, history of breast reduction surgery, as assessed on screening form) Conditions which predispose to preterm labor or otherwise constitute a high-risk pregnancy as outlined by the National Institute of Child Health and Human Development including: breech presentation, vaginal bleeding during second or third pregnancy trimester (more than one episode, not related to possible cervical mechanical trauma from sexual intercourse or cervical exam), diagnosed or suspected developmental abnormalities in the fetus, less than 6 months between last birth and the beginning of current pregnancy, placenta previa, diabetes type I or II or gestational diabetes, preeclampsia (or hypertension with proteinuria), smoking, alcohol use, or illicit drug use during pregnancy, oligohydramnios/polyhydramnios, any previous second or third trimester pregnancy loss/miscarriage