Rather than baselessly asserting this, why don't you ask a pregnant teenager (or someone who was pregnant as a teenager) whether they were shunned or shamed? I

Rather than baselessly asserting this, why don't you ask a pregnant teenager (or someone who was pregnant as a teenager) whether they were shunned or shamed? I think you'll find that most experienced one or the other, and probably both. Being supported by your parents and other authority figures is the exception, not the norm.