My periods are weird, they typically don't come for months and when they do I just spot. A few days ago, my menstrual cycle started heavy and it hasn't stopped. It's made really tired to where I can be on my feet for only a few minutes ,then I have to sit or lay down and I fall asleep for hours. Is the being overly tired normal as since I haven't had a real period in awhile I don't know. I'm also more emotional than normal.