"i&#039;ve taken plan b in the past. always worked! minimal side effects . well not this time. i had unprotected sex and the guy ejeculated in me. i was on the pill but wasn&#039;t taking it at the same time everyday. i took the plan be 24 hours after sex. the first 6 days i experienced a drastic change in my emotional state. i felt sad and depressed every day! it was hard to be my usual cheery self! if felt like a cloud over my head that i couldn&#039;t get rid of. by the 7th day.i woke up to pain in my lower stomach and cramping in my back . i wanted to vomit and did several times with hot flashes and chills right after. soon after my period started but the cramps and sick feeling did not go away! i was in bed all day. it works but can make you sick !!"