CD 19..3dpo

Well I tested again last night, still neg. So only one pos OPK this cycle..that is okay tho.. I think CD 16 my test sticks one may have been a + If i dated the dumb things I would know. LOL. Anyways here are the stats

CD 16 fri-
temp 97.7
- opk
BD/soft cup

CD 17 sat-
temp 98.0
+opk
bad o pains

CD 18 sun-
temp 98.4
-opk
slight o pain
BD/soft cup/pre seed

CD 19 today (mon)-
temp 98.4
havent tested today
no o pain

According to FF I Oed on CD 16 according to my temps, which is all good, but why no pos, why no o pains..I think i may have Oed on CD 17..Im not sure.. Anythoughts?  Got my dr apt tommorw...I also really need to start taking those damn pre natals.. I should be on my 3rd refill..and im only on my first bottle.