Before we were TTC our second child I went to a Naturpath to get checked out as I was having short cycles (22-25 days) and before that I had always been 28 days spot on. She checked everything out (weight/height/muscle mass/exercise/diet etc) and determined that I was producing too much oestrogen and not enopugh progesterone, hence making my cycle shorter. She modified my diet so I ate less carbs and put me on a nutritional supplement and a couple of months later I was back to 28 days again. Shortly after that, we started TTC and I fell pregnant almost straight away. If you are open to natural remedies, perhaps you could try a naturopath in your area? Hope this helps