One of the most common causes of miscarriages is chromosomal abnormalities. Women with a chronic condition, uterine abnormalities, or weak cervical tissues also have a higher risk of miscarriage.
In many cases, women do not even realize that they’ve had a miscarriage. One of the most common symptoms of miscarriage is vaginal bleeding, followed by cramping and pain in the lower abdomen.
While some bleeding in the first trimester is common (around 20 percent of women report some bleeding during this phase), this can indicate that the chance a miscarriage may occur will be higher than average.
Other symptoms of miscarriage include uterus contractions that occur every 5-20 minutes, discharge (including clots), and abdomen or lower back cramps (similar to menstrual cramps).