The best time to get tested for STDs? Before you enter a new relationship. Los Angeles County recently instituted a free service in which women can log on to dontthinkknow.org and receive an at-home test for chlamydia and gonorrhea. Send your test back, and get the results texted to you within a week—embarrassment and hassle-free. The program, based on one originally designed by a Johns Hopkins School of Medicine professor, has since spawned sister programs throughout the country. To find out if the service is available in your city—and what to do if it's not—log on to iwantthekit.org.

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