Yes, there are family and parents’ organizations. For more information see the following links:
Petit vélo jaune: http://petitvelojaune.be
MMM Belgium: http://www.mmmeurope.org/en/home
Brussels Childbirth Trust: http://bctbelgium.org/
Ligue des Familles : https://www.laligue.be/association
Gezinsbond : https://www.gezinsbond.be/en
Aquarelle : http://www.aquarelle-bru.be/index.php/fr