Perinatal mental health disorders continue to be a growing health concern as they are associated with both maternal and neonatal adverse outcomes. Worldwide, about 10% of pregnant and 13% of those who have just given birth experience a mental disorder. In developing countries, 15.6% of women during pregnancy and 19.8% after child birth succumb to mental problems (WHO, 2013). This study substantiates the need for program and policy development to help address and curtail perinatal mental health disorders and its concomitant problems. A quantitative descriptive design was used. Respondents included 371 pregnant to 6 weeks post-partum women, aged 18 and above, and with a partner; who were accessed randomly from 14 barangay health centers in Baguio City from December 2016 to March 2017. A questionnaire made up of DASS Scale (Depression, Anxiety, and Stress), PMPS-E (Perceived Maternal Parenting Self-Efficacy), and MSPSS (Multidimensional Scale for Perceived Social Support) was used to gather data with permission granted by authors. Data gathering commenced after ethics committee approval. Mann Whitney U, Kruskal-Wallis H, Pearson's r, and McNemar's were used as statistical tests. Data revealed that 52.03% of perinatal clients suffer from mild to severe form of mental health problem at any stage of the perinatal period. Specifically, 31.81% suffer from depression, 56.61% from anxiety and 29.92% from stress. The family status of the clients reveal that 5.93% experience spousal violence, 33.51% have problem with child discipline, 21.08% have conflict with in-laws, while 78.05% rated their spousal relationship as excellent. Mental health status is influenced by the experience of spousal violence (p=.002), problem with child discipline (p=.002), conflict with in-laws (p=<.001), and the quality of spousal relationship (p=.004). Maternal self-efficacy is high in all dimensions, regardless of the number of children. MSE is influenced by the degree of psychosocial support (p=<.001) and quality of spousal relationship (p=.035). (3) All throughout their pregnancy period, clients perceive high psychosocial support with the highest coming from their husband. PSS is influenced by the quality of spousal relationship (p=<.001). Spousal violence can be aggravated by conflict with in-laws (p=<.001) and problem with child discipline (p=<.001). Similarly, quality of spousal relationship is influenced by experience of spousal violence (p=<.001) and conflict with in-laws (p=.011). Each stage in their perinatal period offers specific challenge that affects mental health status of perinatal client, thus, (1) DOH needs to mandate health workers to perform comprehensive and routine mental health and psychosocial assessment of all perinatal clients, and for health care providers to integrate in their interventions ways of coping with the psycho-emotional challenges of the perinatal period. Family factors and to address the factors that influence both mental health status and maternal self-efficacy, (3) Family factors influence Family members, especially the significant person to be educated regarding the challenges, risks, and responsibilities of having a family member who is in the perinatal period as they are the primary psychological resource of the perinatal client, health care providers, to establish therapeutic alliance with these family members.