I'm 37.. I got my menstrual sep 8th very very light. The 4th day it got heavy for an hour and basically stopped.. On the 18th I woke up to spotting.. Light pink, then dark red, then next day it was brown and here I am 7 days later bright red. I have no cramping, no pain and I'm not soaking through any tampons or pads.. I'm urinating more than usual but I think that's because I keep going to check if I'm bleeding.. Could it be my period again and since it was so light the week before my uterus didn't shed? Thank you