Hi Joey,
Welcome to SoulCysters! And, congratulations on working to get your bulimia under control. I am sure that is no easy task and commend you for it.
I have heard of a connection between eating disorders and PCOS -- e.g., that eating disorders can disrupt one's pituitary functioning and hormonal balance and lead to PCOS. I've also read that PCOS ladies can be at high risk for eating disorders; because losing weight is often offered as a treatment strategy for overweight cysters, some may develop eating disorders in an attempt to quickly lose weight, instead of purusing a well-managed diet.
I did some searching on the Internet and found one interesting study on bulimia and PCOS. Here's an excerpt:
“McCluskey et al found that three quarters of 34 patients with bulimia nervosa had polycystic ovaries and roughly one third of 153 patients with the polycystic ovarian syndrome attending an endocrinology clinic had scores on a self rating scale for bulimia indicating disordered eating. It was stated that fluctuations in carbohydrate intake associated with bulimia may facilitate the phenotypic expression of the polycystic ovarian syndrome via altered insulin resistance.”
http://bmj.bmjjournals.com/cgi/conte...l/318/7179/328
What's interesting to me is that the author suggests that bulimia can lead to insulin resistance problems, which can in turn lead to PCOS.
Unfortunately, I don't have an answer as to whether your improved diet regimen will help resolve your PCOS. Based on the study above, however, I would definitely recommend that you have your insulin evaluated to determine if treatment with insulin-sensitizing meds would be helpful to you (if you have not done so already, of course).
I hope that other cysters may have better answers to your diet question, or possibly personal experiences to share. If you don't get the answers you want in this forum, you also may want to post in a different area of the site.
Best of luck and again, welcome! Do keep us posted on your progress and on anything you learn about using diet to improve your PCOS symptoms.
Wishing you success with TTC #3!

Lissa