I went off the BCP for 3 months back in college bc I was studying abroad and my mother forgot to send me my renewals . The reason I went off for 3 months was bc it took me 3 months to get a period. Once I got AF, I went back on.
Last time I went off the BCP (October 2004), I o'ed that same cycle and got AF 4 weeks after my last BCP.
The first time I was taking Triphasil-28. The second time I was taking a monophasic low-dose BCP called Minesse (nto available in the US I think). I think that made a difference.