BBT questions

Cyrena • My husband and I are ttc our first child. We have been trying for a little over 2 years. I am 28 and my husband is 30 and we have been married for 5 years.
Is anyone charting their temperature. Mine is always around 97.6 to 97.8. What does that mean. I'm also 11 days past my period. I was wondering if your temperature goes up when you might be pregnant or does it stay the same.