Hello dear I can understand your concern You had unprotected sex and you took postinor 2 within 6 hours. It is very effective in preventing the pregnancy. I appreciate your concern about postinor 2. After that you had protected sex. Due to protected sex, there no chance of the pregnancy. So there is no need to take the another set of the postinor 2. Postinor 2 cause withdrawal bleeding, earlier/delayed period, excessive bleeding can occur. Avoid stress, maintain proper pelvic hygiene, take healthy diet, drink plenty of water and do regular exercise. Always use condom in future to prevent the unwanted pregnancy Hope this may help you Contact HCM for further health query Best regards Dr. Sagar