"you are probably on here reading all these reviews panicking whether the plan b pill is working for you or not. i&#039;m here to calm the nerves, plan b does work!!! i am a teen and me and my boyfriend made the huge mistake of having unprotected sex one night. he pulled out but just to be sure i purchased a plan b the next day. about 1-2 days later i began experiencing symptoms. fatigue, nausea, back pain, all symptoms that mimick pregnancy://. but do not worry! i got my period even earlier than expected and everything was completely normal! calm those nerves ladies, plan b does work((:"