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.
Learn how to use BBT to detect ovulation. 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.rogesterone, however, also causes the resting body temperature to rise after ovulation. Because progesterone is only secreted in high levels after ovulation, it is possible to identify ovulation for the day BEFORE the temperature rises when temperatures are plotted on a graph.