The article discusses the features of the family system’s response to the stressor of a complicated pregnancy. The results of a comparative study of two groups of families are presented: with a normatively proceeding pregnancy and with a complicated pregnancy. The parameters of the family system were studied: satisfaction with marriage, family cohesion, authority of the spouse, consent in a couple, emotional attraction, understanding, etc. The parameters of marital relations that are most at risk in the situation of pregnancy complications have been identified.