Someone help!

Hello, I’m a regular cycler, 25-26 day cycles. Usually ovulate day 12. For the first time I’m tracking my bbt. It’s claiming I ovulated day 14, which I confirmed with test strips this cycle, a first to ovulate a little later from what I know. I assumed this meant my cycle would be around 27-28 days, however I’m now going onto day 30. Absolutely no signs of my period, BBT is still high, my cervix is high, I have loads of excess discharge but every pregnancy test is negative. I’ve read so many different things that say if you’re negative testing after a late period, it’s highly unlikely you’re pregnant.