Yeah for sure, if you are getting a temp shift then assume O. I gave up on opks- partially because they never work (They are such a pain). Doc confirmed I was ovulating, and my charts say the same. I wouldn't worry at all, if you have the temp shift I am sure you are also getting a few other signs of O like cm changes?
Temp shift is more than enough for me to concluded I O'd, I would be more doubtful going by opks.