I did a search and found this post. This is exactly what is happening to me. breastfeeding, on mini pill and cycles are getting shorter and shorter.

last 4 cycles were 20 days, 18 days, 17 days, then 13 days!.

I wasn't monitoring cycles before then, but AF returned at 6 months PP and cycles were roughly monthly.

any suggestions? I am really over having AF almost constantly.