About 1 in 9 younger women have used the morning-after pill after sex, according to the first government report to focus on emergency contraception since its approval 15 years ago. The results come from a survey of females ages 15 to 44. Eleven percent of those who’d had sex reported using a morning-after pill. That’s up from 4 percent in 2002, only a few years after the pills went on the market and adults still needed a prescription.