"i had sex with my boyfriend 1/29 around 3am and he came inside of me for the first time (and last). i was fertile and my ovulatation date was 2/1. i freaked out because we are always careful and i&#039;m not on birth control. so he went to out and bought the pill a hour after we had sex. i was suppose to get my period 2/15, but i&#039;m glad to say it came two days early! the waiting period is stressful because you don&#039;t want to be that unlucky 5% but if you take it soon as possible and abstain from sex or use protection it will work! the only side effect i had was abdominal pain, but it went away in 3 days. plan b is great and only a temporary fix. i hope this is helpful and that it works for you ladies as well."