Okay I am 35 yrs old. I started having a period when I was 11. Until my last two periods my cycles have always been 33 days with a period of 5 days long. Typically I have 2 med days, 2 heavy and one light. For the past two cycles my periods have only been 3 days long and are very light. Is this normal as we get older? Has anyone experienced or anything similar?