My mom found out I was having sex

My mom found out I was having intercourses and she’s very disappointed and won’t even talk to me and I really don’t know what to do because I was close with her. Any advice ? I’m 18 between which I don’t consider myself too young. I lost my virginity to my boyfriend a couple months ago and I really don’t regret it because I really do love him. But my mom doesn’t really understand..