Mathieu Roy, 32, was brought to the Trois-Rivières courthouse Monday morning for a bail hearing, but it was postponed because the director of criminal and penal prosecutions was preparing to file new charges.
Roy is charged with sexual assault and sexually touching a minor under age 16 for incidents between December 2013 and April 2014.
According to court documents outlining the new allegations, the victim would have been between 15 and 16 years old when the alleged assaults occurred.
Roy appeared at the courthouse on Friday, and was charged with sexual assault and sexually touching a minor under age 16 for events alleged to have happened between Aug. 25, 2014, and April 21, 2015.
The girl, now 12, recently gave birth at a hospital in Trois-Rivières, located halfway between Montreal and Quebec City.
Hospital staff had alerted Quebec's youth protection service to the case when the girl, 36 weeks pregnant at the time, was escorted to the hospital by her mother for a medical exam.
The identity of both alleged victims is protected under Quebec law.