No. In Post-WWII America, it was quiet, but happened. You just never saw the results. A girl would “go stay with relatives” for a year or so, then return.
Just because it wasn’t open and clearly visible, doesn’t mean it didn’t happen. Recall the push in the 60s for birth control access and abortion.
In “ye goode olde days” we still had the infamous “backroom abortions”. . .
In my school, they were ‘bladder infections’...