It took my husband and I just a month and a half.
It's such a crapshoot - I have friends that have been trying for over a year without luck. There are so many factors including diet, weight, fitness level.
I had been on the pill for 10 years before we started TTC, and I had read that it often takes pill users longer. I asked my doctor about it and she said that wasn't always true. Low and behold, she was right.
Good luck. I hope it works out for you.