Question: what is the chance a girl will get pregnant?
Answer: Most couples (about 84 out of every 100) will get pregnant within a year if they have regular sex and don't use contraception. But women become less fertile as they get older. One study found that among couples having regular unprotected sex: aged 19 to 26 – 92% will conceive after 1 year and 98% after 2 years.