Ok so I literally just turned 39 today. I have been on a 26 day cycle for as many years as I can remember. Last month, I thought I was pregnant for sure. I was a couple of days late which has never happened to me. Did couple test all neg. on day 28 it came. Now this month it's day 29 and still nothing. Is this an early sign of Peri meno? I'm so worried. Please advise.