The fetus is most vulnerable during the first 12 weeks. During this period of time, all of the major organs and body systems are forming and can be damaged if the fetus is exposed to drugs, infectious agents, radiation, certain medications, tobacco and toxic substances.
Risk rates
The first trimester of pregnancy is considered weeks 0 to 13. About 80 percent of miscarriages happen in the first trimester. Losses after this time occur less often. March of Dimes reports a miscarriage rate of only 1 to 5 percent in the second trimester.
It typically begins around week 6 of pregnancy and subsides by the third or fourth month. The exact peak of morning sickness is different for every person, but it'll generally be around week 9. Some newer studies have been trying to assess when nausea and vomiting tends to generally start during a pregnancy.
Most miscarriages happen between 6 and 8 weeks gestation. We know that most of these occur due to a major genetic abnormality in the fetus. The sperm and the egg (which are known as gametes) each contain half the genetic material necessary for a complete person.
These include increasing age, excessive weight, smoking during pregnancy, drinking excessive alcohol and using illicit drugs during pregnancy, having excessive amounts of caffeine during pregnancy, food poisoning, physical trauma, taking certain medicines, infections, and having uncontrolled diabetes.
A 2019 review of medical studies suggests that sleeping on your back carries risks, but it doesn't seem to matter whether you sleep on your right or left side. These studies do have some flaws, though. Third trimester pregnancy loss is very uncommon. Therefore, there aren't many cases from which to draw conclusions.
Easing Your Miscarriage Fears
Try to remember that your fears are normal, but that this phase will pass. Take time to practice mindfulness, meditation, and take some time for yourself. This could include any stress-reducing activities you enjoy like yoga or going for a walk.
Recurrent early miscarriages (within the first trimester) are most commonly due to genetic or chromosomal problems of the embryo, with 50-80% of spontaneous losses having abnormal chromosomal number. Structural problems of the uterus can also play a role in early miscarriage.
More than 80% of miscarriages occur within the first 12 weeks of pregnancy. After 12 weeks, the rate decreases rapidly (Dante et al, 2013; Houry and Salhy, 2014).
For women who know they're pregnant, about 10 to 15 in 100 pregnancies (10 to 15 percent) end in miscarriage. Most miscarriages happen in the first trimester before the 12th week of pregnancy. Miscarriage in the second trimester (between 13 and 19 weeks) happens in 1 to 5 in 100 (1 to 5 percent) pregnancies.
The risk of miscarriage drops significantly as pregnancy progresses. In one study, researchers found a miscarriage rate of 9.4 percent at 6 weeks of pregnancy, 4.2 percent at 7 weeks, 1.5 percent at 8 weeks, 0.5 percent at 9 weeks and 0.7 percent at 10 weeks.
Lifestyle habits to stop or avoid during pregnancy include smoking, drinking alcohol, gaining too much weight, consuming too much caffeine, eating certain foods like raw or undercooked meat and eggs, raw sprouts, some seafood, and others.
Conclusion: For women without symptoms, the risk of miscarriage after attending a first antenatal visit between 6 and 11 weeks is low (1.6% or less), especially if they present at 8 weeks of gestation and beyond.
Grapes. This one is a bit up in the air, but it is sometimes advised that women avoid grapes during their pregnancy. This is because grapes contain resveratrol, a toxic compound that could cause poisoning or other pregnancy complications.
If you do start having cravings, it'll probably be in your first trimester (it could be as early as 5 weeks into pregnancy). They'll get stronger in your second trimester, and then eventually stop in your third trimester. Cravings come in all shapes and sizes. Some women crave fatty foods like chips.
While excessive stress isn't good for your overall health, there's no evidence that stress results in miscarriage. About 10% to 20% of known pregnancies end in miscarriage. But the actual number is likely higher because many miscarriages occur before the pregnancy is recognized.
There is no treatment to stop a miscarriage. If you do have a miscarriage, there was nothing you could have done to prevent it. A miscarriage usually means that the pregnancy is not developing normally. Follow-up care is a key part of your treatment and safety.
The term “pregnancy scare” describes when a woman who wants to avoid pregnancy believes she is pregnant, but later learns that she is not. According to national surveys, more than half of young women experience a pregnancy scare [3,4].
Many physicians advise pregnant women to sleep on their left side. Previous studies have linked back and right-side sleeping with a higher risk of stillbirth, reduced fetal growth, low birth weight, and preeclampsia, a life-threatening high blood pressure disorder that affects the mother.
Between 7 and 9 hours of sleep each day is recommended at the age most women find themselves pregnant. (Genetics and quality of sleep can affect these numbers, but this is a good general guideline for how much shut-eye is needed.)
Sleep is a necessity — especially when you're pregnant! In answer to the question, “How many hours should a pregnant woman sleep?” most doctors recommend eight to 10 hours per night.