When Miriam Labbok was in Australia last year she spoke on fertility, birth control methods and breastfeeding. She has extensively reviewed all the literature, plus I think she may have been involved in studies at Georgetown. As I recall, she was clearly saying that the combined pill was a problem, and she was the first "expert" who I have heard say that the minipill can also be a problem. I think she was differentiating between brands and how some components may be metabolised into oestrogen-like substances. I'm out of my depth here, but this is the direction you might like to follow for more information. Ros Escott [log in to unmask]