E.B.
I was not on the mini pill, but i have never, ever, ever missed a period other than when I was pregnant. I got my period 5 weeks after having my second baby (I had just stopped bleeding a week before!). I am regular like clockwork. I missed one period when breastfeeding. I freaked out, took a pregnancy test, came back negative...my doc told me that that happens sometimes. I'm not sure whether the mini-pill should regulate you so much that you have periods no matter what, or if the hormones of breastfeeding can override that. I was totally shocked--that is the ONLY time I've EVER missed a period...but I was definitely not pregnant!