I think the better question is, "How long did it take for your cycle to get back to normal?" If I had known it was going to take as long as it did, I would have gotten off the pill much sooner. (Actually I hate the pill, it's evil!!)
So to answer that question, after discontinuing the pill, it took me over 3 months to ovulate for the first time, and then I'd ovulate every 2 months after that. Until I took clomid, which helped a bit.
Anyway, long story short, I'm still not pregnant after TWO years, including 4 IUI's and an IVF. I don't wish this crap on anyone. I'm sorry for all you other ladies that have gone through infertility, and/or are still going through it. (and FYI, no one else in my family--that I know of--has experienced infertility)
I am with the others who recommended Taking Charge of Your Fertility. Great book, lots of good information and an easy read. Temperature charting is great too. It allowed me to see if/when I was ovulating, since my cycles were soooo long.
I hope your cycles are NOT like mine and even out in no time! And that you do not have to go through any of what my DH and I have. Good luck and baby dust!!!