"my lover and i had unprotected sex on 12/26 when afterwards i realized i was at my prime ovulation time (day 13 of my cycle; i have a 26 day cycle). as it was saturday evening i couldn&#039;t get plan b that night. the next day 12/27 was a sunday so all the pharmacies were closed. by the time i got my plan b it was already monday late afternoon and almost 48 hours after sex. i took it immediately and felt nothing at all, no nausea, no vomiting, no diarrhea, nothing...except i was very tired and monday night slept for close to 12 hours. what followed was 2 full weeks of pure stress. imagine how happy i was when i got my period on my scheduled date! so relax, girls, if you take plan b according to its instructions it will work."