Great that you've been tracking your cycles. I use the Billings Ovulation Method for achieving/avoiding pregnancy with success. (Conceived my daughter on my first fertile day and have since been avoiding pregnancy successfully for nearly the past 2 years -- all without birth control.) Can be used by women of all backgrounds, faiths, cultures, economic abilities. I love it so much, I'm actually getting certified next month to help teach other women how to track their cycles to avoid or achieve pregnancy naturally by tuning into your body's own fertility signals. I'd totally be happy to talk more, but since I won't be certified until then, feel free to contact your local Billings instructor here for a consultation: http://boma-usa.org//index.php?option=com_sobi2&catid... (They can really help you identify if there's an underlying problem and direct you to the appropriate health care providers.)
-T. (chicago), Mom of Via, 20 months