"let me start off by saying this can happen to anyone. i&#039;m a nurse. on 8/31 my boyfriend&#039;s condom broke. he noticed &amp; pulled out right before he ejaculated. although i didn&#039;t think i was pregnant,12 hours later i took the my choice brand contraceptive. the only side effects i had were achy soreness in my shoulders, little bit of nausea, and exhaustion (but i was up all night worrying if i could become pregnant so i have to factor that in too).  being a rn, i researched the medication, it&#039;s side effects, etc. i also purchased midol &amp; chewable pepto bismal---great investment! first sign of a side effect i took the correlating med. worked like a charm! today is 9/8, was spotting but it&#039;s gotten heavier so it works! i&#039;m 2 weeks early!"