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It is possible to have ECP side-effect after withdrawal bleeding ?

By Anonymous September 20, 2017 - 7:11am
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Hi. Me and my girlfriend had unprotected sex in 4 September, which is her 9th day, her cycle is usually more than 30 days. I ejaculated outside 100% but we still took a Postinor-1 within 1 hour later in fear of precm. 5 days later she had a period-like bleeding that lasted for about 3 to 4 days. The bleeding was heavy enough just like her period according to her. 18 September she took a pregnancy test and it showed negative. After she took the pill she did not have any side-effect at all, until today (20 September) she experienced quite heavy headache followed with slight nauseous, she also said that she may have vaginal discharge on 19 September. All of those symptoms look very like pregnancy symptoms to my knowledge. Could this mean the pill has failed us and she got pregnant ?

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EmpowHER Guest

Thank you for replying. I've seen that you said the bleeding means no pregnancy very much on this site but never actually know why it is so certain. Can you explain to me with some reliable proof ? I'm sincerely thank you for that.

September 20, 2017 - 8:33am
Guide (reply to Anonymous)

Hello Anonymous,

"The success of emergency contraceptive pill (ECP) like an I-pill or unwanted-72 remains 99 percent when the withdrawal bleeding is experienced within next 5-7 days thereby ruling out pregnancy completely due to shedding of endometrium." Sameer Kumar, M.D.


September 20, 2017 - 9:12am
EmpowHER Guest
Anonymous (reply to Maryann Gromisch RN)

Thank you. We just took the test this morning, 21 September, 17 days after unprotected course. It showed negative. If those were pregnancy symptoms it would have shown positive right ?

September 20, 2017 - 5:16pm
Guide (reply to Anonymous)

Hello Anonymous,



September 21, 2017 - 8:07am

Hello Anonymous,

Welcome to EmpowHER.

The bleeding was proof that the pill was effective and she did not become pregnant.

I do not know why she is still experiencing side effects of the pill but if this persists or worsens, she needs to speak with her gynecologist.


September 20, 2017 - 8:29am
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