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Dr. Andrew Rynne
MD
Dr. Andrew Rynne

Family Physician

Exp 50 years

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What Causes An Ectopic Pregnancy?

Hi, I am currently on the Mirena IUD I ve had for a year now, and for the first time I started spotting here and there, headaches, nausea, and also period like cramping. I was reading online that there has been cases where women end up pregnant with the IUD, especially Ethiopic pregnancies? Or maybe these symptoms are side effects? I have not taken any pregnancy test, should I? I hope you can answer my questions.
posted on Sat, 10 Jan 2015
Twitter Sat, 18 Apr 2015 Answered on
Twitter Mon, 20 Apr 2015 Last reviewed on
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General & Family Physician,  's  Response
Hi,
I understand your concern.
* Being a hormone inbuilt IUD- the symptoms can be due to side effects of the device.
* the mechanism of action in Mirena IUD is ,
- increasing thick cervical mucus -thus not allowing entry of sperms in uterus,
- Not allowing implantation of fertilized ovum in uterine cavity by mechanical barrier/ thinning inner layer of uterus.
It does not have any action to stop ovulation, so accidental entry of sperm in uterus & fertilization is possible very rarely.& the implantation takes place out side uterus- when it is in tubes -- it is tubal pregnancy.
Thus tubal pregnancy is rare condition observed in Mirena users.
* If you doubt/ fear of having tubal pregnancy,it's worth doing blood HCG test to exclude it/ consulting a gynecologist for physical examination & investigations.
Thanks.
Thanks.
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What Causes An Ectopic Pregnancy?

Hi, I understand your concern. * Being a hormone inbuilt IUD- the symptoms can be due to side effects of the device. * the mechanism of action in Mirena IUD is , - increasing thick cervical mucus -thus not allowing entry of sperms in uterus, - Not allowing implantation of fertilized ovum in uterine cavity by mechanical barrier/ thinning inner layer of uterus. It does not have any action to stop ovulation, so accidental entry of sperm in uterus & fertilization is possible very rarely.& the implantation takes place out side uterus- when it is in tubes -- it is tubal pregnancy. Thus tubal pregnancy is rare condition observed in Mirena users. * If you doubt/ fear of having tubal pregnancy,it s worth doing blood HCG test to exclude it/ consulting a gynecologist for physical examination & investigations. Thanks. Thanks.