I'm not sure about the stats but I am feeding Fred only twice a day now, first thing in the morning and last thing at night, and still no real AF. My Dr's have said it is totally to do with the womans body and is different for everyone. I know some women who have had to wean to TTC as they just didn't ovulate while BF. I also no others who had no problems conceiving when feeding.

Either way - good luck