Miscarriage usually has symptoms such as vaginal bleeding combined with excess pain like that in periods. A woman has also certain symptoms such as cramping, uterine contraction, as well as lower back pain, nausea and vomiting. So, it is important that you need to make sure with your infertility specialist that your lack of periods is a sign of miscarriage.
Only periods cannot be taken as a sign of miscarriage. If other signs are also present, then it will be confirmed for pregnancy. Before that it is difficult to find out the actual status of pregnancy.