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Dr. Andrew Rynne
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Dr. Andrew Rynne

Family Physician

Exp 50 years

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What Causes Delayed Periods After Taking Plan B?

So I had taken a plan b twice before my menstural cycle Started.. Last plan b i took was last Saturday. I was supposed to get on my period 5-7 days ago but haven t gotten it. Today I had gotten some dark read discharge later on today the discharge got red and slimy I m starting to get cramps is this a sign that I m gonna start my period? (Also had protected sex today) - side note. And is it to soon to know if I m pregnant.
Mon, 21 Aug 2023
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General & Family Physician,  's  Response
Hi,

Actually periods get delayed by about 8-10 days, before you could get delayed period after your first dose of plan B after taking plan B due to addition of hormonal content in hormonal cycle of menstruation. I feel, before you could get delayed period after your first intake of plan B this month, you had taken second dose. This must have caused hormonal imbalance and so the cycle is extra delayed.

The red discharge you had recently could be the withdrawal of hormones of emergency contraceptive (plan B 2nd dose) and your period may follow within 8-10 days after this. Possibility of pregnancy remains, if you had unprotected sex around ovulation (well before your first dose of the plan B. It can be confirmed only by blood pregnancy test (hCG test in laboratory) to be done if there is no period within next 1o days. You have go for MTP in case it's positive as the plan B is hazardous to pregnancy.

Take care. Hope I have answered your question. Let me know if I can assist you further.

Regards,
Dr. Vasudha Jayant Athavale, General & Family Physician
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What Causes Delayed Periods After Taking Plan B?

Hi, Actually periods get delayed by about 8-10 days, before you could get delayed period after your first dose of plan B after taking plan B due to addition of hormonal content in hormonal cycle of menstruation. I feel, before you could get delayed period after your first intake of plan B this month, you had taken second dose. This must have caused hormonal imbalance and so the cycle is extra delayed. The red discharge you had recently could be the withdrawal of hormones of emergency contraceptive (plan B 2nd dose) and your period may follow within 8-10 days after this. Possibility of pregnancy remains, if you had unprotected sex around ovulation (well before your first dose of the plan B. It can be confirmed only by blood pregnancy test (hCG test in laboratory) to be done if there is no period within next 1o days. You have go for MTP in case it s positive as the plan B is hazardous to pregnancy. Take care. Hope I have answered your question. Let me know if I can assist you further. Regards, Dr. Vasudha Jayant Athavale, General & Family Physician