There are reasons for answering YES and there are reasons for answering NO. There is no clear cut answer in my honest opinion.
I tend to lean towards some kind of privacy though. If the teen is not comfortable enough to go to their parents, or they feel adult enough to make their own decision, then they should do that. I mean they thought they were adult enough in the first place to have sex, they should be able to make their own decision when dealing with the consequences.
I would hope that any teen would feel comfortable enough to just go to their parents without being pressured to do so!
However, the other side to that is until the child is 18 the parents have a right to know everything. So it is a catch 22.
So which rights do you violate, the teens or the parents?? I believe the teen should have some rights in this instance, but where do you draw the line?