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Conception

When's the best time to get pregnant? Use our interactive ovulation calculator to work out when you're most fertile and most likely to conceive.

Would the morning after pill work?

8 replies

EllieApril26 · 29/06/2019 14:39

Hi, today the condom broke but I'm unsure if emergency contraception is going to work as I track my BBT and I think I may have already ovulated. To make matters worse I'm abroad...
What should I do?

OP posts:
Squiff70 · 29/06/2019 15:41

When you ovulated has no relevence to whether the MAP will work or not. If you don't want a pregnancy, do try to get it.

EllieApril26 · 29/06/2019 15:45

Oh okay, but I thought they worked by stopping you from ovulating?

OP posts:
satsumasaturday · 29/06/2019 15:47

I think they work by stopping implantation happening rather than ovulation, so definitely still worth trying to get it

genome · 29/06/2019 15:49

If you have already ovulated it won't work. The morning after pill prevents pregnancy by delaying or preventing ovulation. It doesn't have an effect on implantation.
A coil would be another option that can prevent implantation, but obviously might be difficult if you are abroad currently.

genome · 29/06/2019 15:50

From Wikipedia:

The primary mechanism of action of progestogen-only emergency contraceptive pills is to prevent fertilization by inhibition of ovulation.[4][26][40][63][64][65] The best available evidence is that they do not have any post-fertilization effects such as the prevention of implantation.[4][26][40][63][64][65] The U.S. FDA-approved labels and European EMA-approved labels (except for HRA Pharma's NorLevo) levonorgestrel emergency contraceptive pills (based on labels for regular oral contraceptive pills) say they may cause endometrial changes that discourage implantation.[66][67][68] Daily use of regular oral contraceptive pills can alter the endometrium (although this has not been proven to interfere with implantation), but the isolated use of a levonorgestrel emergency contraceptive pill does not have time to alter the endometrium.[66] In March 2011, the International Federation of Gynecology and Obstetrics (FIGO) issued a statement that: "review of the evidence suggests that LNG [levonorgestreol] ECPs cannot prevent implantation of a fertilized egg. Language on implantation should not be included in LNG ECP product labeling."[66][69] In June 2012, a New York Times editorial called on the FDA to remove from the label the unsupported suggestion that levonorgestrel emergency contraceptive pills inhibit implantation.[70] In November 2013, the European Medicines Agency (EMA) approved a change to the label for HRA Pharma's NorLevo saying it cannot prevent implantation of a fertilized egg.[71]

Progestogen-only emergency contraceptive does not appear to affect the function of the Fallopian tubes or increase the rate of ectopic pregnancies.[72]

The primary mechanism of action of progesterone receptor modulator emergency contraceptive pills like low-dose and mid-dose mifepristone and ulipristal acetate is to prevent fertilization by inhibition or delay of ovulation.[4][26][63][64][65][23] One clinical study found that post-ovulatory administration of ulipristal acetate altered the endometrium, but whether the changes would inhibit implantation is unknown.[4][73] The European EMA-approved labels for ulipristal acetate emergency contraceptive pills do not mention an effect on implantation, but the U.S. FDA-approved label says: "alterations to the endometrium that may affect implantation may also contribute to efficacy."[66][74][75]

The primary mechanism of action of copper-releasing intrauterine devices (IUDs) as emergency contraceptives is to prevent fertilization because of copper toxicity to sperm and ova.[4][26] The very high effectiveness of copper-releasing IUDs as emergency contraceptives implies that they must also prevent some pregnancies by post-fertilization effects such as prevention of implantation.[4][26][63]

EllieApril26 · 29/06/2019 15:55

Okay thank you. Just wish there was more that I could do...

OP posts:
genome · 29/06/2019 22:52

Sorry x

PinkDaffodil2 · 29/06/2019 23:01

A copper coil fitted within 5 days of intercourse would be your safest bet, the MAP won’t help if you have ovulated but also won’t do any harm.

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