"i took it about an hour after having sex, because the condom broke. i&#039;m on birth control but haven&#039;t been taking it on time. i took it as an extra precaution and had my period a few days late. i got my period and i have been throwing up and have had the worst back pains ever. i have never felt so horrible. i haven&#039;t kept any food down and started also having diarrhea. it&#039;s the worst pain i think i&#039;ve ever gone through."