I'm afraid I don't have any experience of this really, since I've only just come off the pill and am not expecting my first AF for a month or so at least. But I didn't want to leave your thread looking lonely! From what I've read though, although some women are lucky and go back to normal straight away after coming off the pill, lots don't and some may have irregular cycles for many months. So I don't think you should be worried! You experience sounds fairly normal to me for someone who is just recently off the pill. Annoying, but not unusual!

Try not to get stressed about it - your cycles will settle in their own good time :\).
PMA and babydust
xx