I'm 99% sure now I am on my second cycle! Last month, I worked out and started bleeding and assumed (even though the doctor cleared me) I was bleeding from doing too much. However, I decided to chart it, just in case. Exactly 28 days later, I'm bleeding again! I EBF on demand, no supplementing. I had the same thing happen with my first daughter but assumed it was the mirena (as I bled constantly, spotting or light, for 8 months, but it would pick up more when it was "that time"). I'm using no birth control right now (except condoms.. Just to clarify I'm not a total idiot here and going for Irish twins or something), so I know it's not that.
Who else has had their period show back up while EBF?