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.

Has anyone had successful pregnancy after 3 miscarriages?

It's true that the majority of people who have a miscarriage will go on to have a successful pregnancy when they next conceive (about 80%, one study carried out in the 1980s found). Even among couples who have had three miscarriages in a row, for more than half, the next pregnancy will be successful.