"i had sex during my most fertile time! the condom broke and i was freaked out! i took plan b 30-36 hours after it happened. i was super tired the day i took it and slept most of the day. i then received bad cramps i thought i was &quot;implanting&quot;! a few days later i started getting nauseous and back pains i thought i was pregnant! that continued for almost a week.. and i got really sick... my boobs hurt, and i had awful pain in my back. at that point i was terrified!  now 2 days late i received my period!"