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Dr. Andrew Rynne
MD
Dr. Andrew Rynne

Family Physician

Exp 50 years

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Is Using Contraceptive Patch Safe After Having Unsafe Sex?

Hi! I was wondering if there is any chance I might be pregnant? My period ended Tuesday (it was a week long) and the first day of my period I took it off.Late Tuesday night when I got home from work I put the patch back on (it was almost Wednesday because it was so late).Today I had sex but the guy didn t come because we had oral prior and he came then. I m worried now because I feel like the patch won t be effective and should I just go out and get Plan B? Thank you so much!
Tue, 8 Dec 2015
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General & Family Physician 's  Response
Hi,
Thanks for posting in HCM.
I understand your concern.
Use of any form of hormonal contraception in the form of pills or patch would take about a week to ensure protection against pregnancy.
Hence, it is advisable to use other methods of contraception like condoms and spermicide creams for up to 2 weeks following its use.
Any penetrative intercourse always carries a risk of pregnancy.
It would be better to take emergency contraceptive pill if the time has not lapsed more than 72 hours, as your act this time carries some risk and to be on safer side.
Hope the information provided would be helpful.
All the best.
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Is Using Contraceptive Patch Safe After Having Unsafe Sex?

Hi, Thanks for posting in HCM. I understand your concern. Use of any form of hormonal contraception in the form of pills or patch would take about a week to ensure protection against pregnancy. Hence, it is advisable to use other methods of contraception like condoms and spermicide creams for up to 2 weeks following its use. Any penetrative intercourse always carries a risk of pregnancy. It would be better to take emergency contraceptive pill if the time has not lapsed more than 72 hours, as your act this time carries some risk and to be on safer side. Hope the information provided would be helpful. All the best.