Spotting a week after period?

I notice this morning when I went to pee I was bleeding, enough to color the water. My period ended over a week ago, I don't have irregular periods. But a week before my period, I began having the same symptoms of bleeding. At first it was a lot, then it just showed up when I wiped. The fact that it is bright red does concern me because I know it's fresh blood. Should I go to the doctors immediately or wait it out till tomororw and see if I still am?