Most of us acquire knowledge regarding sex and sexuality, through various formal and informal avenues. Much of the information acquired through infornal sources is unlikely to be accurate or correct. Sex being a topic, which is not openly discussed is shrouded in secrecy.
In recent decades, the most common means by which couples regulate fertility have changed from methods requiring control or cooperation by men, e.g., condoms, withdrawal and periodic abstinence, to those for which women bear primary responsibility e.g., virtually all-reversible modern methods.