Asking for a friend who is trying for her first baby: what is the best way to measure ovulation?

Another alternative but "leceh" way to keep tracking of your ovulation dates is to track your period dates. You are most fertile 12 to 14 days before your period starts, and that is when your egg is release. Your egg can only live from about 12 to 24 hours, and your husband's sperm can last about 5 days in you.