AF was due today, TMI

So, AF was due today and she hasn't shown up yet! I'm glad because I don't want to see her, but I tested yesterday and got a bfn. I have had some discharge and it has been just a little bit, sometimes with light brown coloring. Other than that, it's white-yellowish discharge and only a little bit. Not sure what's going on! I've had other symptoms like mood swings and frequent urination, but to me I can't desipher it from just plain old PMS! I'm at the edge of my seat here, playing the waiting game! Anyone else feel my pain??