Young girls living in shanty town experience life that may subject them to psychosocial needs (PNs), negative lust behavior (NLB), associated with sexual risk behaviors (SRBs). We aimed to understand how these variables not only independently affect girls who do not purposely use condom or abstain, but also how they shape antisocial behaviors that lead to unintended pregnancy (UP). Participants were 875 girls’ members of Young Girls Association (YGA) living in set barracks. We assessed the pitfall symptoms of NLB and SRB (who do not use condom, use condom, abstained) among 19500 sexually active girls as participants. Descriptive statistics and correlation among observed variables for left-behind girls and non left-behind girls were analyzed. The results showed that independent variables were significance to dependent variable, moreover, independent variables were insignificance status to predict SRB. These results provide novel evidence of girls who have had an UP and effectively were ready to change. Our findings provide important information for future researchers based on SRB. Poor relationship, poor mental perceptions, sense of satisfaction are targeted in unplanned pregnancies prevention programs in the key population.