Antenatal Breastmilk Expression in Pregnant Women at High Risk of Preterm Birth

Inclusion Criteria: * Pregnant women with a GA between 28 weeks and 0 days and 34 weeks and 0 days who are either diagnosed with preeclampsia or PPROM or have previously given birth before 34 weeks of gestation * Resident in the Region of Southern Denmark * Women speaking and understanding Danish or English * Planning to breastfeed their infants Exclusion Criteria: * HELLP or severe preeclampsia indicating expected induction of labour/caesarean section within a few days (According to national guidelines) * Chorioamnionitis indicating induction of labour/caesarean section within a few days * Women with a vaginal cerclage and PPROM * Women taking medications contraindicating breastfeeding * Women with prior breast reductive surgery or mastectomy * Below 18 years of age * Contractions to a certain extend expecting delivery within a few days * Included in other trials, where breastfeeding is among outcomes