due to pcos I started a low GI diet and read a few books on it, which said 'studies show that losing as little as 5 percent of body weight can help control blood glucose levels, improve menstrual function, reduce testosterone levels....blah blah.'. You probably dont have pcos (surely you'd know by now) but if it helps us with it to conceive, then it might just work for you too. Are your periods regular? Anyway, good luck!