Suggest Treatment For Brown Vaginal Discharge And Stomach Cramps

i've been having some brown gooey liquid coming out of my vigina for about two weeks now the first week when it started was supposed to be the time my period was supposed to start but it hasn't iam sexually active also on the middle of the first week i felt really ughly cramps blood came out the day after that and i thought i was ok but so far no visit from my period