There are no recent official statistics. But Venezuelan doctors are reporting spikes in the numbers of unwanted pregnancies and sexually transmitted diseases that are adding to the country’s deepening misery.

Mainstream media outlets have published articles about the “counting method” of contraception that women can use to calculate when they are ovulating and likely to get pregnant. An article on the Venezuelan website Cactus24 offered “15 home remedies to avoid pregnancy,” including eating papaya twice a day and drinking two cups of tea with ginger.

Many Venezuelan women have found a solution on social media, where Facebook, Instagram and Twitter have become informal exchanges for the purchase or trading of birth control pills, intrauterine devices and implants — albeit at black-market prices.