I'd go and jump on dh right now.

You may have a few days of the watery cm, and a lot of times just before I O my temps are a bit lower then normal, and then go way up. So it may be possible that you are oing right now. Especially when you have unpredictable cycles you may never know when you are going to O.
Just keep at it with the temping. It may be a few more days yet, but you may see your thermal shift happening any day.
Good Luck catching th eggie!