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At which date should she expect her next period?

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Hi, first of all thank you for replying my first message, it really helped indeed.
Here's another confusion and we'll be grateful if you could please share us your expert opinion once again.
My girl, had bleeding on the 10 th day after taking an i pill (10th March 2012). This was about a week earlier than her normal period. Her last period had come on the 16th or 17th February 2012. So we are wondering-
1. As her recent bleeding was only due to the effect of the pill, will it be counted as this month's period?
2. As you have mentioned in your previous message, if her next period gets delayed - At which date should she expect her next period? on the mid 20s of this month (March) or in April?
As I have mentioned above her last normal period was on the 16 or 17 of February.
Thank You.

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replied March 15th, 2012
Birth Control Answer A32807
Welcome back to ehealthforum,
Thanks for the repeat query,
If she has got the withdrawal bleeding after taking emergency contraception, it would indicate that pregnancy has been prevented (provided you were not sexually active without protection after she took the emergency contraception). Since these pills contain high dosages of hormones, the usual hormonal and period pattern gets disrupted. Wait and watch for her periods which can be delayed. To arrive at her next expected period date, count the usual menstrual cycle length starting with first day of the withdrawal bleed. Look out for development of any new symptoms if pregnancy is suspected. She should visit her gynecologist for further evaluation and assistance if she does not get her periods within 10 days of expected period dates, or gets abnormal bleeding. If pregnancy gets ruled out and if you are not ready for pregnancy, but intend to remain sexually active, you should consider getting her started on suitable regular birth control measures to be protected (after her periods). She should be regular with birth control use as instructed. Avoid having unprotected sexual contact if you are not ready for pregnancy.
Take care.

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