I BFd DS up to 15 months, (but at that stage it was only one feed a day). When I had my FS appointment at about 14 months to start up for No 2 he said that I would need to have stopped by the time we started. This was because it lowers your fertility and they want you to have the best chance. (He didn't say anything about whether the hormones came through milk but I imagine they do and I didn't want DS getting a huge whack of oestrogen!).

I started an FET cycle about two weeks after I stopped BF and got a BFP! So for me it all worked out well, but I'm not sure if it would be different if I had been doing a fresh cycle. Also, the fact that I had had regular periods since about 5 months post DS and was only down to one feed per day probably made the difference too.

Good luck Entreat - it's a scary prospect going back to IVF land again ain't it!