Recommended citation format: Schnitkey, G.  Cost Cutting for 2016: Budgeting for $4 Corn and $9.25 Soybeans . farmdoc daily (5):141, Department of Agricultural and Consumer Economics, University of Illinois at Urbana-Champaign, August 4, 2015.
Generally: The temperature rise occurs after ovulation, usually about 2 weeks before the period starts. 4. About a week or so before my period starts, during my period and sometimes a few days after ,I run a temperature that ranges 99 - 100.
Basal Body Temperature (BBT) is your body temperature at rest (wake up time). BBT rises after ovulation due to increased progesterone released from the corpus luteum after ovulation. Ovulation can be detected on a fertility chart for the day BEFORE the temperature rises.