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Dr. Andrew Rynne
MD
Dr. Andrew Rynne

Family Physician

Exp 50 years

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Vomiting After Taking Birth Pill. Will The Pill Be Ineffective? Any Chance Of Pregnancy?

I started my birth control pill pack on April 12, and took my pill at 9:00 PM like I usually do. I vomited at 10:00 PM, which has me worried that this pill was ineffective and could have sparked ovulation. My boyfriend and I had unprotected sex on April 23, and used Plan B one step an hour after this. Should I be worried about pregnancy?
Mon, 10 Jun 2013
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General & Family Physician,  's  Response
Hi.
Thanks for asking in Healthcare Magic.

You have not mentioned if you have vomited out the sugar pill or the hormonal pill. Efficacy of the OCP depends upon the un interrupted intake of hormonal pills. No harm can occur if you have vomited the sugar pill but if it was a hormonal pill, then surely the contraceptive protection would be reduced.

You need not fear about pregnancy as you have used plan B after the intercourse. But your next menstrual cycle can be delayed because plan B also contains progesterone and a high blood level of progesterone can delay periods.

This delay, again can create confusion and doubt about pregnancy. So if your period is delayed, do pregnancy test and rule out pregnancy as that will relieve your anxiety.

I hope this is useful to you.
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Vomiting After Taking Birth Pill. Will The Pill Be Ineffective? Any Chance Of Pregnancy?

Hi. Thanks for asking in Healthcare Magic. You have not mentioned if you have vomited out the sugar pill or the hormonal pill. Efficacy of the OCP depends upon the un interrupted intake of hormonal pills. No harm can occur if you have vomited the sugar pill but if it was a hormonal pill, then surely the contraceptive protection would be reduced. You need not fear about pregnancy as you have used plan B after the intercourse. But your next menstrual cycle can be delayed because plan B also contains progesterone and a high blood level of progesterone can delay periods. This delay, again can create confusion and doubt about pregnancy. So if your period is delayed, do pregnancy test and rule out pregnancy as that will relieve your anxiety. I hope this is useful to you.