By week 4, they may be able to get a positive result on a home pregnancy test.Īs many as 50–75% of pregnancies end before getting a positive result on a pregnancy test. Implantation usually occurs around 3 weeks after a person’s last period and about a week after ovulation. Also, people may change any potentially damaging lifestyle habits they have once they know that they are pregnant.Ī general estimate of miscarriage risk by week is as follows. This is why most miscarriages occur early in pregnancy.Īs the fetus gets stronger, it may be less vulnerable to harm.
Even if a person has this type of pregnancy loss, they can generally go on to have a healthy pregnancy in the future.įetuses are most vulnerable early in development, so other factors - such as exposure to alcohol - can have the most damaging effects at this time. Early in pregnancy, genetic issues are a major cause of miscarriage.Īround 80% of pregnancy losses occur during the first trimester, between 0 and 13 weeks.Īlthough the loss is often devastating, these genetic issues mean the baby could not have survived outside the womb. Most pregnancy losses are due to factors that the person cannot control. Share on Pinterest Catherine McQueen/Getty Images