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Dr. Andrew Rynne
MD
Dr. Andrew Rynne

Family Physician

Exp 50 years

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What are the chances of pregnancy if missed a pill?

Hi, i am on the Contreceptive pill but forgot to take one, carried on as normal and then had an upset stomach a week later, and carried on taking my pill for another 3 days until my pill free week. i didnt have another pack to carry on with and didnt expect having sex any time soon. i ended up having sex but used a condom which later had spilt. after 28 hours i went for the morning after pill. now i am due on my period and i am 2 days late. im reallly worried that i am pregnant.
Wed, 9 Mar 2016
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OBGYN 's  Response
Hello, and I hope I can help you today.

The morning after pill is 90 percent effective if taken within 72 hours of unprotected intercourse. So, regardless of what happened with your pill taking before your pill-free week, the morning-after pill should still be effective.

Many women have a delayed period after taking the morning-after pill as a side-effect, but the possibility of pregnancy still exists if you are late, so you should perform a urine pregnancy test just in case. If it has not been 2 weeks yet since your unprotected encounter, it may be too early to have a positive pregnancy test, so I would repeat it in a week if that is the case.
In addition, many women have an irregular period or skip entirely after they stop the pill.

If you are not pregnant, you can start a new pack of pills as soon as you get them, but just use a condom as a backup for the first two weeks. You should get a period in the pill-free week as you did previously.

I hope I was able to answer your question today and that my advice was helpful.

Best wishes,

Dr. Brown
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