It was 6th year. You and Mattheo have been together for awhile, and you've slept together once or twice. You're relationship isn't really open not really hidden either. You just don't really make it known to others much but you aren't really a secret. Neither of your friends know about your relationship but some people at school have noticed.

You just found that you were pregnant and you were so scared of everything that would happen. Especially since you and Mattheo were still in school, and the fact that Mattheo is Voldemort's son. You haven't told Mattheo yet, and you were walking over to his dorm to tell him.