well, you are not alone, I am wondering the same thing but my period came, and i'm not convinced yet that i am safe. but this is one thing i do to calm my nerves. I check my BBT every morning while I am in Bed. ( Basal Body Temperature )
Interpreting the Basal Bobby Temperature Chart
The normal ovulatory pattern: Measure your basal (resting) body temperature first thing in the morning—even before getting out of bed. During the f follicular phase (the first half of your cycle) the \"normal\" BBT pattern should show only slight variations in your temperature (under 98 degrees). In response to progesterone produced at midcycle by the corpus luteum, your BBT will rise about a half degree (to about 98.4)
Sustained temperature rise: A sustained rise in your temperature—beyond the date for your next period—means that you are pregnant!
How to Keep Your Basal Body Temperature Chart
Begin taking your temperature on the morning your menstrual period ends.
At your first waking moment take your temperature by inserting the thermometer in your mouth, vagina, or rectum for five minutes. Do not vary your procedure from day to day or month to month. Use a clock to time yourself. DO NOT smoke a cigarette, eat or drink, or get up to go to the bathroom or to go find your thermometer before taking your temperature.
Record the thermometer reading on your chart under the correct day of your cycle (day 1 is the first day of your period). Record the days you have sex by placing an arrow at the bottom of the column. Record the days of your menstrual flow with an X. Record mittleschmerz if you feel it. Note any exceptions on your chart—for example, if you are ill, did not get a good night's sleep, or are running a fever. Also mark when your doctor performs any tests and what they are.
Wash the thermometer with cool soapy water, rinse it, shake it down, and place it in its protective case beside your bed. Some people prefer to use alcohol or disposable plastic thermometer protectors.
Repeat this procedure every day until your next period begins. Each month start taking your temperature on the morning your menstrual period ends.
but BBT is to keep up with your timing of ovulating, if you have a history of your periods. then you can find out if you were fertile that time you had unprotected sex. Go to mymonthlycycles.com to track ovualting and periods.
Believe me, I'm still afraid and I have a lot of thinking to do. I do believe in life though.