"so i had unprotected sex with my guy on sep 15th and took plan b within an hour or so. the next few days i had spotting, tender breasts, felt awfully nauseous and tired. today&#039;s the 23rd and i got my period. it is a day early and a bit lighter, but i am glad it is here. the pill works though i am going to go on regular birth control pills so that i never experience this stress again."