I had sex two days ago, but used prtection. now, i have my period. i know i'm not pregnant and my period is a week early, not only that it's light.

Menses different: Turns out that not everyone's menses is like clockwork & regular. Some women experience surprises every month in that their menses are irregular, both in timing & flow. If you want to regulate your menses, chat w/your FamilyDoc or GYN about hormonal birth control. But continue to use condoms, too, to protect yourself from sexually transmitted diseases/infections. And ask about HPV vaccine vs warts