Probiotic Supplementation During Pregnancy in Women With High-Risk Pregnancies

Inclusion Criteria: * Pregnant women ≥ 18 years old * High risk of PE (≥ 1 high-risk factor, or ≥3 moderate risk factors according to the Swedish Society of Obstetrics and Gynecology (SFOG) 2019 guidelines); or low risk of PE (no high-risk factors, or \<3 moderate risk factors): * High risk factors are: * Auto-immune diseases such as SLE or anti-phospholipid syndrome * Previous preeclampsia or eclampsia * Previous hypertension of pregnancy with preterm birth before gestational week 34, growth restriction, intrauterine fetal death or ablatio * Type 1 or 2 diabetes * Duplex (or triplex) pregnancy * Kidney disease * Chronic hypertension * IVF with egg donation * Moderate risk factors are: * Nulliparity * Heredity for preeclampsia (at least one of mother, maternal grandmother, or sister) * BMI\>30 * Age\>40 * Pregnancy interval \>10 years * Systolic blood pressure \>130 mmHg or diastolic blood pressure \> 80 mmHg at admission in antenatal maternity care * African descent * Verified obstructive sleep apnea * Ability to give written informed consent Exclusion Criteria: * Enrollment in another clinical study * Use of other probiotic supplements in the last 2 weeks before baseline, or during the course of the study * Use of antibiotics in the last 6 weeks * Current treatment with metformin, progesterone, or regular medical treatment which may impact study aim (e.g. laxatives) * Immunosuppression * Diabetes mellitus (type I and type II) * Inflammatory bowel disease * Celiac disease * Bad obstetric history * Other serious conditions that might affect gut flora or capability of the subject to participate * Language difficulties or difficulties understanding informed consent