 Sample size. The calculations have been made based on the primary endpoint, World Health Organisation Five Well-being Index WHO-5 at 29-34 weeks of gestation. The WHO-5 wellbeing index score ranges from 0-100, where 100 is the best possible wellbeing. The average value measured by the WHO-5 wellbeing index at 10-12 weeks of gestation is 62 points with a standard deviation SD of 16. This has previously been assessed among pregnant women at the University Hospital, Rigshospitalet. For the calculations at 29-34 weeks of gestation we will use the SD observed at 10-12 weeks of gestation. The investigators expect that the effect of the intervention causes a 10 point higher WHO-5 index score in the intervention group than in the control group at gestational week 29-34, which is clinically significant Guide to the well-being index: WHO-5, Danish Health Authority. 