Description
Having sex may sometimes make your period appear to start earlier, especially if your period is already due. During orgasm, uterine contractions may help menstrual blood flow out, but sex does not reliably trigger menstruation or change your menstrual cycle. Spotting after sex can also occur due to friction, hormonal changes, or cervical irritation. If your period is late, remember that pregnancy is possible after unprotected sex. Take a pregnancy test if needed. Consult a healthcare professional if bleeding is heavy, painful, or unusual.