I agree with the poster above, I would calculate the 'bleed' as a period and count from there. When I came off the pill over a year ago my cycles picked right back up, nearly to the day, as when I was on the pill. Apparently I am very regular, and I didn't have any withdrawal bleeding, and I can't remember if it was heavier/lighter (I have fairly light periods but I think they did get a touch heavier off the pill, but nothing terrible...I would still classify them as lighter overall). I'm not so great at this as my first pregnancy (just recovering from that MC sadly) was a NTNP. We just stopped using condoms, had a lot of BD and bam, pregnant. I know we were lucky.