I took ec 3 weeks ago and have been bleeding for 2 weeks straight. is this normal? im on the last week of my bc and i have the iud, im not pregnant?

Hormones hormones...: Plan B or other EC pills can alter the menstrual bleeding for the cycle in which Plan B was taken, and sometimes the next cycle. One should check a home pregnancy test about 3 weeks after sex, because emergency contraception pills work most of the time, but not all the time. If the IUD has hormones, it plus BC plus EC would mean taking 3 doses of hormones... one should ask her doctor why.