brown discharge/bleeding before period?

Have you had unprotected sex since your miscarriage? If yes, then there’s always the possibility you could be pregnant again. The brown discharge you are seeing is actually just old blood and some girls will see it first before the actual flow of the newer blood which is red. You know that your period occurs because each month your uterus becomes line with a layering of blood, providing a place to cushion and allow a fertilized egg (if it happens) to embed into the uterus. If pregnancy doesn’t occur then the lining sheds. Sometimes some blood may be retained and the following month that is the blood you see that is dark brown, usually just a wipe once or twice and then the regular flow begins. That spotting and light flow could have been your period the month, because the hormones in your body change once you become pregnant they also change back after pregnancy. So, maybe wait a week or two and you could do a home test or if any other problems occur you can contact your OB/GYN.