"hey ladies. so with my husband, i had used plan b a couple days ago, about 15 hrs after. now i&#039;m not going to know quite yet wether it works til i&#039;m due for my period around the 20th of july.. but i&#039;m not too concerned as im not ovulating quite yet. and the only side effect, still is off and on nausea. but i see some people saying the pill won&#039;t work. some insight.. if ur ovulating, and have unprotected sex, u obviously have a high chance of pregnancy. with or without this pill. if you read, this pill is supposed to postpone/prevent ovulation so u can&#039;t become pregnant. therefore, if u do have sex while ovulation, and want to take the pill, it&#039;s risky, but should be taken right after, otherwise may not work. just a suggestion :)"