The first trimester (first ~13 weeks) is generally considered the riskiest because it's when the baby's major organs and body systems are forming, making the fetus most vulnerable to damage from infections, substances, and medications, and it's when the highest percentage of miscarriages occur. While the second trimester is often seen as easier, risks like birth defects and later pregnancy loss (stillbirth) can happen at any time, with the third trimester bringing physical discomfort and preparing for labor.
It is during this first trimester that the fetus is most susceptible to damage from substances, like alcohol, drugs and certain medicines, and illnesses, like rubella (German measles). During the first trimester, your body and your baby's body are changing rapidly.
The third trimester is the final stage of pregnancy and can be considered to be the most painful. During this stage, your baby is getting bigger, which puts more stress on your body that causes aches and discomfort.
Most miscarriages happen in the first 12 weeks of pregnancy (known as early miscarriage). It is estimated that early miscarriages happen to 10-20 in 100 (10 to 20%) of pregnancies. It is estimated that second trimester loss (late miscarriage) happens to 3-4 in 100 (3 to 4%) of pregnancies.
From a medical point of view, at 12 weeks a pregnancy is generally considered to be "safe". While a miscarriage (or later, stillbirth) can happen at any point during gestation, the odds are highest in the first trimester.
More than 80% of miscarriages happen during the first trimester or by the end of the 14th week.
Some call the second trimester the "golden trimester" because early pregnancy symptoms, like nausea and fatigue, usually go away. You may not have the pain, anxiety, and insomnia that often come with the third trimester. In other words, the second trimester is often the most energetic and pleasant one.
The risk of miscarriage also decreases significantly—to about 5 percent—after your doctor detects a heartbeat. This typically occurs at around your 6 to 8 week mark. The chances of having a second miscarriage after a woman has already experienced one is also very slim at less than 3 percent.
Chromosome conditions
If your baby inherits a chromosome condition, they'll not be able to develop properly. This causes a miscarriage. It's not possible to tell which parent passed on the chromosome condition. Chromosome conditions are thought to be the most common cause of an early miscarriage.
However, there are ways to lower your risk of miscarriage, including:
The second trimester of pregnancy is often the most enjoyable. Find out how to relieve common symptoms — and consider ways to prepare for what's ahead. The second trimester of pregnancy often brings a renewed sense of well-being. The worst of the nausea often is gone.
There's no perfect time to share your pregnancy—do what feels right for you. Many wait until after the first trimester. Miscarriage risk drops after 13 weeks, but it's also OK to tell trusted loved ones earlier for support.
It's common to feel tired, or even exhausted, during pregnancy, especially in the first 12 weeks. Hormonal changes at this time can make you feel tired, nauseous and emotional. The only answer is to rest as much as possible.
First Trimester (0 to 13 Weeks)
The first trimester is the most crucial to your baby's development. During this period, your baby's body structure and organ systems develop. Most miscarriages and birth defects occur during this period. Your body also undergoes major changes during the first trimester.
Around week 10, there's a steep drop and just a 5% risk. There's another sharp decline around 13 weeks, when miscarriage rates drop to just 1%. The risk continues to decline until week 20 when it becomes zero. These rates are based on a healthy woman under the age of 35.
A high-risk pregnancy is one in which a woman and her fetus face a higher-than-normal chance of experiencing problems. These risks may be due to factors in the pregnancy itself, or they may stem from preexisting maternal medical conditions, such as cancer, diabetes, or lupus.
Caffeine. You can have caffeine, but no more than 200mg per day. Regularly drinking more than this amount can increase your risk of pregnancy complications, such as low birthweight, and even miscarriage.
There is no evidence of reduction in the risk of miscarriage in women prescribed bed rest. HCG administration as an alternative care for threatened miscarriage was more effective than bed rest in the Harrison study but this benefit is not confirmed when compared with placebo.
Signs and symptoms
Missed miscarriage is sometimes called a “silent miscarriage” because it often doesn't cause the usual signs of pregnancy loss, like heavy cramping, bleeding, or passing tissue. However, some people may notice that their pregnancy symptoms, like breast soreness, nausea, or tiredness, go away.
A pregnancy may also be more likely to end in miscarriage if you:
A: It is possible to experience a miscarriage without bleeding or spotting. Other signs that a person may be experiencing a miscarriage include cramps, pain, loss of pregnancy symptoms and passing discharge, which may be stringy and/or whitish-pink in colour. Any, all or none of these symptoms may be present.
Pregnant women should also try to avoid all marinated foods, pickled goods, processed foods, foods that are high in monosodium glutamate, as well as caffeinated drinks like tea, coffee and carbonated drinks as these all contain substances which could have adverse effects on the health of your unborn child.
The "3-2-1 Rule" in pregnancy is a guideline for first-time mothers to know when to call their midwife or doctor for active labor: consistent contractions every 3 minutes, lasting 2 minutes each (or 1 minute long for some variations), for over 1 hour. It helps differentiate true labor from false labor (Braxton Hicks), signaling it's time to head to the birthing center, while subsequent pregnancies often follow the faster 5-1-1 rule.
For example, you shouldn't clean a litter box due to the risk of toxoplasmosis. You should also avoid lying on your back for extended periods of time. At nighttime, sleep on your side instead of your back, as this is best for your circulation. Don't stress if you wake up and find yourself on your back.
Less than 3% of babies were born each hour between midnight and 7 a.m. However, this number rose on Saturday and Sunday, when births were more likely to occur overnight.