They are ALWAYS heavy, always extremely crampy, PMSing, etc. I basically live on ibuprofen
and a heating pad for a week.
At any rate, in mid July, I was surprised one day to go to the bathroom and find brownish spotting on my underwear. I thought, "Okay, my period's about to start," but not so. No cramps as warning, no pains, nothing. It lasted three days, never even enough to put in a tampon. Light brown to pink, never red.