"took the pill about 45 minutes after mishap with my boyfriend. suffered from indigestion and restlessness throughout the night, but didn&#039;t vomit until about 7 hours later. i vomited about 15 times total, ~ every 15-30 minutes whether i drank something or not. now my entire body is in flu-like pain and my head is killing me. i can barely get out of bed without wanting to pass out or being in immense pain. the vomiting stopped after about 5 hours, but i can definitely say this has been one of the worst experiences of my life. i&#039;ve only been on it for 1 day, so i can&#039;t comment on its contraceptive effects. i just wanted to make this post for anyone else suffering. it passes. just keep yourself hydrated with small sips of gatorade and water."