R.O.
it's the mini pill....#1 cause of breakthough bleeding, especially in the begining of starting it. I started mini pill @ about 3-4 postpartum, spotted and stopped pill right away b/c who wants to bleed, again? I also EBF both kids and didn't get my period for 10 months w/1st baby and 8 months w/ second one...Everyone and every time can be different. But, I would blame mini pill!