On 27 February 2020, the first COVID-19 case was confirmed in The Netherlands, in the city of Tilburg. The virus spread quickly through the Netherlands, with the Tilburg and surrounding cities as hotspots. In early March 2020, strict measures were introduced to keep the spread in control. Social distancing and self-quarantine were introduced and many health care visits were cancelled or rescheduled. Around this time, Tilburg University and Radboud University Nijmegen started working together to examine the impact of the COVID-19 outbreak on pre-conception, pregnancy, and postpartum outcomes. We included over 2,000 women and men that provided information their health, exposure to the virus, health care experiences, and psychological well-being.