Lindsay - I am with the other girls on charting being a good bet for you. I have PCOS and only ovulated 2 times in 2006, but I knew when those times were! And the charts also helped me to know when I wasn't ovulating, so I could see my doctor about getting pills to end the cycle, and start over.
It really helped me learn about what my body was doing, so even though I only O'd twice, I got one of them.
Best of luck to you!