Thought I could've been pregnant. Missed my period, then I got light blood for and hour then it stopped. Couple days later I got a little heavier blood and stopped after a few hours. Now three days later I started my period again with usual blood amount and it lasted 4 hours. No PMS symptoms, other than headaches and fatigue. I have been urinating every 10 mins like clockwork without pain. Has anyone else experienced this?