)
You say your cycles are always 28 days, but you had just been on
Nuvaring, right? If your body unaffected by
Nuvaring naturally had 28-day cycles so accurately that you could set your watch by it for years and years and this had all happened at a time when you had no influence of Nuvaring, then one could say you would be expected to ovulate on 6/6. But unfortunately, you were just off Nuvaring, and cycles can take a while to adjust when you are out of its influence.