It's hard to say when you o'd without charting your basil body temps, but typically your luteal phase or LP (the days between o-ing and getting your period) lasts 12-14 days. There are many moms who have a less-than 10 day LP and some have a 16-day LP. so that's why it's hard to say when you o'd. Chances are you o somewhere in the 3rd-4th week of your cycle.
Check out the book Taking Control of Your Fertility which will give you lots of information on cycles work and instructions on BBT's and other signs of ovulation. It's our "bible" around here.
Let us know if you have any more questions!!
ETA: WOW! In the few minutes it took me to type this you already had an answer and you replied!! I'm too slooooow