Positive OPK after temperature rise

Today (CD 17), I had my first positive ovulation test. Yesterday the test line was there, but not near as dark as the control; Sunday there was virtually nothing on the test line and last week, I had faint pink lines. I would have no questions if my temperature hadn't started to rise already. On Friday, it was 96.9, it has gone up by .1-.2 degrees everyday, today being 97.5. Previously when I have ovulated, I'm closer to 98 or slightly above. Is it possible that I haven't ovulated yet, despite the rise in bbt?