The truth is, sometimes the cause of recurrent pregnancy loss (RPL) cannot be found. The good news in these cases is that there's always a chance that a successful pregnancy happens next time.
There are, however, some health conditions that are known to increase a woman's chances of miscarrying. Although they are uncommon, the following are some conditions that are known to lead to RPL:
Antiphospholipid syndrome (APS)
Thrombophilia
Genetic problems
Problems with your womb
Bacterial vaginosis
Polycystic ovaries
Some lifestyle factors