I have only been TTC now for 2 months so I don't have much history to present. I have been very regular, with cycles that always last 28 days. I used an OPK last month that was positive on CD14. I test in the morning and by CD15 the smiley was gone. This month, I got a smiley on CD13 and it was gone by CD 14. The part that confused me was I just got my BBT thermometer in the mail yesterday and this morning it read 97.38. I am on CD 16 so I expected it to be higher since I should have ovulated by now (I realize I don't know what my norm temp is). Any thoughts?