Best of luck Gabi for whichever answer you are hoping for. I didn't get AF back until 7 months pp first time and 6 months the second, although I did have some bleeding after the lochia stopped after DS1. I found I had all sorts of things happening with cm while bfing, and when AF did return, it was very irregular (although it didn't take long to conceive DS2 once AF returned). So I'm not sure I am of much help, except to say that your fertile signs might not be as obvious while bfing.