Are you sure it's not just old blood? I get brown discharge from time time in the beginning of my period.
Yes, I agree. Brown 'discharge' is old blood and most women have this from time to time. It's very common and not something serious. If you are sexually active, you may want to take a pregnancy test to rule that out but otherwise, your period is probably just late as it is from time to time for women. I would not worry at this point. good luck