Quoting Smartass *TTC*:" <blockquote><b>Quoting Complete With 2!:</b>" Are you periods usually regular? Your ... [snip!] ... So the days between my last day of my period and the first day of my period is my cycle? What day do people typically ovulate?"
It goes from the first day of your period, to the first day of your next period. The time between is how long your cycles are.
A cookie-cutter cycle is 28 days, with ovulation on day 14 (so about a week after your period ends). But most women this isn't true.
It will take you a few months to see a pattern. I suggest buying OPKs off of Amazon, and testing twice a day starting 10 days after the start of your period. If I didn't test twice a day, I would have missed my surge each month.
Once you get a positive, ovulation will occur within the next 12-36 hours. You don't get a positive right as the egg is releasing.