Pregnancy during adolescence is a major risk factor for adverse pregnancy outcomes. Further, Motherhood during the adolescent period is identified as a major global health burden. Considering the widely known importance of the negative impact of adolescent pregnancy, motherhood at an early age, and adverse pregnancy outcomes, this paper aims to provide insight into correlates of teen pregnancy, adolescent motherhood and adverse pregnancy outcome. This study utilizes the data from UDAYA survey conducted in Uttar Pradesh and Bihar. The eligible sample size for the study was 4897 married adolescent girls between the ages of 15 and 19 years. Bivariate analysis with a chi-square test of association and Multivariable logistic regression analysis was performed to fulfill the aim of the study. Our study shows that a major proportion of married adolescents (61%) got pregnant before the age of 20 years and around 42% of all adolescent married women gave birth to a child before reaching the age of 20 years. Adolescents who married before the age of 18 years were 1.79 times more likely to experience pregnancy (OR: 1.79; CI: 1.39–2.30) and 3.21 times more likely to experience motherhood (OR: 3.21; CI: 2.33–4.43). In the present study, women who experienced physical violence were at higher risk for having an adverse pregnancy outcome (OR: 1.41; CI: 1.08–1.84) than those who did not experience physical violence. To conclude, regional and national level efforts focused on improving early marriage, education and empowering women and girls can be beneficial.