Understanding Miscarriage

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Why does miscarriage occur?

A pregnancy is most vulnerable in the work of Weeks 7 to 13. Repeated miscarriages can result from issues with:  

implantation;
genetics;
immune disorders;
physiology;
hormones;
toxin exposure;
lifestyle;
trauma;
the mothers age and
infections
The fetus is abnormal in 70% of miscarriages. 

Implantation issues mean the couple conceives but the fertilized egg cannot implant safely in the uterus for a full-term pregnancy. 

Miscarriage that occurs in the first trimester of pregnancy (Day one to Week 12) is most likely caused by a genetic disorder with the fetus. For example, Turners syndrome is a genetic disorder that terminates 98% of affected pregnancies in the first trimester.

Late miscarriage in the second trimester (four to 6 months) can happen from issues with the immune technique or physiological issues. Examples of immune technique issues are: 

Rh incompatibility, where the sister is Rh negative and the sister and fetus are Rh positive. The mothers antibodies assault the fetus as a foreign invader.


Antiphospholipid antibodies that cause clots in the placenta. Between 10% and 15% of repeat miscarriages are caused by these antibodies, and the fetus often grows in to the second trimester.

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Lupus, where the womans overactive immune technique assaults her body. ANA antibodies are present in the bloodstream. 
Defective fetal-blocking antibodies that cannot protect the child from the mothers immune technique when the parents DNA is similar. Multiple miscarriages will likely occur at the exact same time each pregnancy, usually before Week 12.
Examples of physiological (mechanical) issues are: 

Uterine fibroid tumors - Although they are benign (non-cancerous), fibroids can crowd out a pregnancy. Submucosal fibroids act like an IUD contraceptive to prevent the egg from implanting in the uterus. 
Ectopic (tubal) pregnancy - In 2% of pregnancies, the egg does not implant in the uterus, but stays in the fallopian tube, which ruptures when the embryo outgrows it.


Incompetent cervix - In one out of every 100 pregnancies, the sister has a weak cervix due to a earlier difficult delivery or miscarriage, or cervical surgical procedure, D&C termination, birth defect, or exposure to DES (Diethylstilbestrol). The cervix is weak and opens before the fetus can survive outside the mothers body, usually in the second trimester (Weeks 13 to 27 of pregnancy) or third trimester (Weeks 28 to delivery). One-quarter of kids lost in the second trimester are due to incompetent cervix.

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Placenta previa - The placenta grows over the cervical opening and will tear in the second trimester.
Progesterone deficiency is a hormonal issue where the pregnancy cannot be sustained past the tenth week without progesterone supplements (natural progesterone cream is available online from http://www.hormonesolutions.com.au. Check together with your doctor.