I have had brown discharge for 9 days

I have had brown discharge for 9 days and in the middle of those 9 days it was heavier but only enough to fill one tampon but that was just for one day the first day it was pinkish and then on the 4th day it was the heaviest and it was like a deep red but it was only that one time. My period was due today on 3/3 and I haven't gotten it took 2 hpt one when it was 5 days before my period and one today the day my pd was due can anyone help me out I'm kinda freaking out