I have just started basal body temperature charts (BBT) in order to try to conceive. I had a temperature drop on day 14 and a rise on day 15. The rise just stood until day 22 and then started to drop below my cover line. How do I also detect the LH surge?

  • To be sure of ovulation, you need either a self-administered urine test called an ovulation predictor kit, or a blood test at your doctor’s office. If you use the ovulation predictor kit you should use it under the direction of your doctor.
  • By BBT, sometimes you can suspect ovulation by a small drop in temperature just before the rise in temperature in the progesterone phase. The finding is not that reliable to go by however, which is why most specialists recommend the ovulation predictor kit.