Pregnancy Women Health

Chances Risk and Sign of Miscarriage Week by Week

Sign Chance & Risk of Miscarriage by Week : It is a word which used to describe the loss of a pregnancy before 20 weeks due to varies reasons. Miscarriage mainly occurs in the first trimester. This is very unfortunate that around 10 to 20 % of pregnancies in America end up in Miscarriage.  In many cases, miscarriage happens before a woman realize that she is pregnant. But as pregnancy progress chance of miscarriage decrease.

Common Causes of Miscarriage
There are many causes of a miscarriage which include.

  • A genetic problem with the unborn baby which has nothing to with mother.
  • Certain disease such as diabetes or thyroid.
  • Hormone disorder.
  • Physical problem with mother
  • Progesterone Deficiency
  • Abnormal uterus.
  • Infection in the uterus.

Chances Risk Sign of Miscarriage by Week

Sign/Risk of Miscarriage during Pregnancy by Weeks

For a pregnant woman, miscarriage is a big concern. But as pregnancy progress chance of miscarriage decrease. After reading this article you will have a better understanding of why miscarriage occurs and what are the sign and risk involves in miscarriage. To know sign and risk of miscarriage week by week is very important for a pregnant woman.

  • 2-4 Weeks

Weeks 1 to 4 is very critical for pregnant women. The maximum number of miscarriage occurs during this phase. The chance of miscarriage is very high and which is around 20- 70%. But as pregnancy progress chances of miscarriage decrease.

 Sign of Miscarriage during 2-4 Weeks

Miscarriage also depends on pregnant woman age. Chance of miscarriage increase drastically for the woman above age 35 years.

Age Chance of Miscarriage
20-30 years 20 -30%
30-39 Years 25 – 40%
40-44 Years  40-50 %
45+ years 80 – 100%


  • Weeks 5-6-7

Risk of miscarriage decrease drastically after week 5 to 6 %- 20 %. Once you complete 5 weeks of your pregnancy, you also miss your periods. At this stage, the embryo is just starting taking shape which consists of 3 layers the endoderm, ectoderm and mesoderm.

Sign of Miscarriage between weeks 5- 7

  • Bleeding
  • Cramps
  • Bleeding with clots
  • Abdominal pain
  • Heavy Heartbeat

Chance of miscarriage is higher for the woman above age 35 years. As woman get the old chance of miscarriage increase drastically. An older woman may be more secure financially and mentally but the older woman also has the high chance of having a baby with Down syndrome.  Visit your doctor regularly if you notice any sign or symptoms of miscarriage.


Age Chance of Miscarriage
20-30 years 8- 17%
30-39 Years 10-20 %
40-44 Years 20- 30 %
45+ years 30 %

After week 7 risk of miscarriage decrease greatly and by week 8, you can actually hear the heartbeat of the baby.  As heartbeat increase, the chance of miscarriage decrease. The baby grows very fast in during this phase.

Chance of miscarriage at week 8 reduces to 5-10 %. To continue a healthy pregnancy you just need to do what your doctors say. Keep a healthy diet and environment for a healthy pregnancy.

Symptoms / Sign of Miscarriage at Week 8


Age Chance of Miscarriage
20-30 years 5%
30-39 Years 7%
40-44 Years 8 %
45+ years 10%


  • Week 9

At week 6 the chance of miscarriage reduces to 3 -6%. The baby becomes the size of a grape and develops body parts. At this point in pregnancy, you will feel morning sickness and frequent change in your mood. You should follow your doctor instruction during this phase of your pregnancy.

  Miscarriage warning symptoms at week 9

  • Lower back pain that can be mild or severe
  • White pink vaginal discharge
  • Sudden weight loss
  • Very painful contractions
  • Bleeding with clots and clots will appear like an embryonic sac


Age Chance of Miscarriage
20-30 years 3%
30-39 Years 4%
40-44 Years 5 %
45+ years 6%


  • Week 10

At week 10 risk of miscarriage become very less but you cannot be careless. Follow your doctor’s advice and eat healthily. Only 2-4% woman has a miscarriage at week 10.

Signs of Miscarriage at 10 Weeks

  • Lower back pain that can be mild or severe
  • White pink vaginal discharge
  • Sudden weight loss
  • Very painful contractions
  • Bleeding with clots and clots will appear like the embryonic sac


Age Chance of Miscarriage
20-30 years 2%
30-39 Years 3%
40-44 Years 4 %
45+ years 5%


  • Week 11-12

Risk of miscarriage at week 11-12 become 1-3 %. You will feel morning sickness and mood swings this period of pregnancy.  You should take care of your diet and daily physical activity to have a healthy baby.

Signs of Miscarriage at 11-12 Weeks

  • Lower back pain
  • White pink vaginal discharge
  • Very painful contractions
  • Bleeding with clots and clots will appear like an embryonic sac


Age Chance of Miscarriage
20-30 years 1%
30-39 Years 2%
40-44 Years 3 %
45+ years 4%


Miscarriage Risk by Fetal Heart Rate

Many people wonder and ask their doctor about the link between the fetal heartbeat of baby and miscarriage. In fact, your heartbeat of a baby can assure you that pregnancy is going well or not. Sometime heartbeat is also a sign of miscarriage.

Can the Heartbeat Predicts Miscarriage?  According to research and many doctors, that heartbeat of a baby between 6-9 weeks should be 160-180 per minutes. It means your pregnancy is going well. But it will reduce to 110 -160 per minutes as baby develop brain after week 9.

If your baby’s heartbeat rate is less than what it should be according to the gestational age then it is a sign of miscarriage. As we have already mentioned most of the miscarriage occur because of the abnormal chromosome. According to study chance of miscarriage increase if the baby heartbeat drops less than 100 per minutes at weeks 6-7.   But it is not certain so you should consult with a doctor and have multiple ultrasounds to make sure.


Is Male Sperm and Age Causes Miscarriage?

Yes, miscarriage risk not only revolve around woman age but it also depends on man’s age and sperm quality.  According to the study on 12000 people in France, that pregnancy rates drop surprisingly when a man is an age above 35.

Also, the number of miscarriage increase drastically. So it’s clear that the age of men is as important as a woman.  It is also found in the study the abnormal DNA in sperm can cause miscarriage.


Why Do Miscarriages Happen?

For a woman, pregnancy is a very big step as well as a blessing but sometimes it comes with some complications and miscarriage occur. It can happen to a healthy woman too and sometimes you don’t realize it for days.

So big question comes in your mind why it happens or why miscarriage occurs? There can be many reasons for miscarriage.

Miscarriage occurs when an embryo or fetus dies before 20 weeks. Even though it is very common but it can be tough for a woman to deal emotionally. If a woman had a miscarriage in the past that does not mean she cannot have a baby in future or miscarriage will happen again.  Reasons for miscarriage include

  • The abnormal number of a chromosome when the egg is fertilized can cause miscarriage.
  • The certain illness which cannot be treated can cause miscarriage.
  • 2 or more miscarriage can increase the risk of having a miscarriage in the future.


What are the different types of miscarriages?

Mainly miscarriage occurs in the first trimester but it can happen until week 12 of pregnancy. There are many types of miscarriage which include.

  1. Threatened miscarriage – It happens when you have bleeding and cramps but your cervix is closed is called a threatened miscarriage.
  2. Inevitable miscarriage – When you have heavy bleeding with cramps and your cervix is open.
  3. Missed miscarriage – This type is more heartbreaking because there is no cramps and bleeding involves. But when you have ultrasound embryo has no heartbeat or your womb is empty.
  4. Complete miscarriage – When all the embryo tissue comes out and you don’t need treatment.
  5. Incomplete miscarriage– It occurs when some tissue gets out and some left in the uterus.

Read: How to Reduce Ankles Swelling in Pregnancy

Prevention Tips for Miscarriage

Mostly miscarriage occurs because of genetic and some other problem which we cannot control. But if you planning to conceive a baby you need to prepare yourself mentally and physically. Change your eating habits and lifestyle. Follow below tips to have a healthy pregnancy.

  • Eat healthy and balanced
  • Do light physical exercise
  • You can start doing yoga
  • Stop smoking and drinking alcohol
  • If you are a coffee addict then avoid drinking it.
  • Get in touch with a good doctor for a healthy pregnancy.

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