This is my first cycle doing BBT. My temps have been consistently in the lower 97s. On Friday (CD 12) and Saturday (CD13) my OPKs were positive both morning and evening. Monday it went bck to negative. My temps are still in the low 97s. I am currently on CD 15 which is actually when I got my first positive last cycle. Just wondering if anyone else has had this issue? I'm guessing I still haven't ovulated because I didn't have a temp spike, but don't you normally ovulate 12-36 hours after the first positive?