AF came back for me, despite fully BFing every 3 hours or less, when DD was 6 weeks old.

I went on the mini-Pill when she was 4 months. I started on the first day of AF and i got no AF for 45 days (was panicking and doing HPT's almost daily by then...) and then AF every 16 days for 3 "cycles" and then back to 30 or so but with spotting...not so great! I am funny with hormonal contraceptives though, so if you're fine with them they might not have that effect at all.

I did find that it slowed down my let-down, which added to my problems with BFing. This might not happen to you, but it's something to watch out for, so you can be prepared etc.

HTH

Bec