"my boyfriend and i had unprotected sex and he pulled out but came all over my vagina. i was really scared that somehow sperm would make their way to an egg. i was ovulating at the time. i took plan b about 20 hours after it happened. i had no serious side effects except a little light headedness every once and awhile. i started to regularly check my cervix position to make sure that it wasn&#039;t low and soft (which would mean i was most likely pregnant). it never was and i got my period on the exact day it was supposed to come! so girls - don&#039;t stress yourself out too much."