Amanda, I have had AF once since Tom was born, and had it 3 times while bfing Jack before I fell pg again. I haven't had a problem with supply or taste anytime. My problem with supply was only when I was pg again! I know sometimes they can be fussy with the taste for a day or so before AF arrives and this can last a few days, other times there is no issue. I hope it all goes well for you. If you haven't had problems so far I think you'll be fine.