Hi All I have a client who has a 16 month old child who is still breastfed, who was conceived by implantation of a fertilised embyro. (Father's sperm count too low to allow normal conception). They are now thinking of having another embryo implanted, but doctors say she must wean first. She has had regular periods for the last 4 months, and has no problems maintaining a pregnancy. If she is having regular periods, it suggests to me that her hormones are probably working from a conception point of view, and that breastfeeding would have nothing to do with her ability to maintain a pregnancy. She requires no medication once the embryo is implanted. Apparently the doctors can track her cycle with blood tests and ultrasound of her ovaries, so I can't see where breastfeeding fits in at all, as long as her body is ready to become pregnant. Does anyone have any comments?? Fiona Coombes MBBS IBCLC [log in to unmask] Nursing Mothers' Association of Australia Breastfeeding Counsellor Lactation Consultant, Family Physician Perth Western Australia