I am ovulating around 14th day of my cycle but recently periods come at least week later than normally.cycle lenght is around 37 days now.what problem?

Need a crystal ball?: Remember that ovulation occurs 14 days before the start of your period. So if your cycle is 28 days, you ovulate on day 14 - counting your first day of bleeding as day #1. If your cycle is 37 days long, you ovulate on day 23. Read toni weschler's great book, "taking charge of your fertility." she gives you a range of tools to help you figure out when you are ovulating. Good luck. Lgromko md.