"plan b one step is a lifesaver. my boyfriend and i had un protective sex. so within 4 hours after the incident, i took the pill. i was paranoid as hell, not sure whether this pill would work or not ( my first time taking it and i am also young). i experienced mild cramping , head aches and nausea for five days. but my period came on time ! the key is to stay calm and let the pill do its job."