Positive OPK two days in a row but no temp spike yet?

This is my first month using opks and tracking my bbt, I was super excited when I got my first positive opk on Tuesday. I got another positive yesterday and I haven't tested today. My temp has been basically a constant 97 degrees since Tuesday morning though. All 3 days have been 97.00 - 97.03, so barely any fluctuation at all. Does this mean I didn't actually ovulate or is there a chance my temperature will spike tomorrow? I was pretty disappointed when I checked this morning and my bbt hadn't changed. ?