Hi and

!!!!!!!!!!!!!!! I would highly recommend the same book that Jennifer mentioned, TCOYF, it's great! I agree with her as well, you period starting a full flow is the first day of your cycle. Most people do not O right at CD 14, and every cycle is different. Also, if you're coming off of BC pills, it might take a while for your body to adjust and have a normal ovulatory cycle.
Good luck to you hon, and ask any other questions you might have!