This was my last cycle, it only lasted 18 days :( and my previous cycles are similar but some can last 30+ days too! And then others can last 12-16 days, as you can see we dtd nearly every day that cycle and same with my others! I am losing hope! I have PCOS and I am on metformin. Does anyone know how I could possibly make my cycles longer?! I no it's a mad question but I am so sick of these weird cycles! Is anyone else in a similar position? Feel so fed up! thanks