There was a article years ago. A young woman started getting Target coupons for diapers and baby formula. A few weeks later she found out she was pregnant. She had been using her loyalty card to make purchases and had bought unscented hand cream and some other low perfume things that apparently are usually purchased by people who are expecting as their sense of smell becomes heightened and the sents become overwhelming.
Honestly I’d like to see a ban on targeted pharmaceutical advertisement. Prescription medication should be between you and your doctor.