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.

How common is it to miscarry 3 times in a row?

Just 2 percent of pregnant women experience two pregnancy losses in a row, and only about 1 percent have three consecutive pregnancy losses. The risk of recurrence depends on many factors. After one miscarriage, the chance of a second miscarriage is about 14 to 21 percent.

Can 3 miscarriages just be bad luck?

Because miscarriage is so common, it's not unusual for women to have more than one. Having two or even three miscarriages in a row can just be particularly bad luck and the most likely outcome for these women is that they will go on to have a normal pregnancy next time.