Experiencing multiple miscarriages, especially if you are also coping with infertility, is physically and emotionally draining. After all, a positive pregnancy test is one of the most exciting moments for patients struggling with infertility. Unfortunately, the time between a positive pregnancy test result and the first ultrasound—weeks later—can be extremely stressful, particularly for women with a history of miscarriage or ectopic pregnancy. Understanding the causes of recurrent miscarriages can help you know what to expect in the future. Here are some common explanations for multiple miscarriages.