28-year-old Victoria Moreno was arrested over the weekend and charged with sexual assault of a child.
Police began investigating Moreno last September when they found out the 14-year-old she was living with had not been enrolled in school for almost a year.
Police later found out they were in a relationship together, but when they asked Moreno about it, she denied the relationship.
She later went to police and confessed to knowing that the boy was just 14 and that she was also pregnant with his child.
Moreno is in jail on a $10,000 bond,