Hi Suz,
Yes I was on a diet. Also I went on my bike abou 3x a week. I bought a couple of low GI diet books and just basically followed that. I very rarely eat a food that is high GI, I stick to low/medium and I found I felt so much better! I still eat carbs but my portions are small, I eat frequently and the carbs are always 100% whole grain. I was mildly overweight before - I'm 5ft, 4 and weighed 155. So far after 1 month I've lost 5 pounds and my belly which was always 2 sizes bigger than my hips flattened down a lot!
It's hard to stic to at times, but the odd time I cheatd I felt absoltel horrible (tired, fuzzy heade etc) that I now stick to it because I feel so much better.
I really think the diet and met did the trick prior to the met my cycles were ever 90+ days and always annovulatory.
Good Luck Suz, I wish you all the best
Curly