Egg white CM but no positive OPK

This is my first cycle using OPK tests as I’ve gone some time TTC with no luck and I also have long and irregular cycles (hypothyroidism). Today, I had a large amount of clear, egg white cervical mucus which I always thought meant it was go time, but my OPK was negative (digital).

Wondering why this could be? Do I ignore the test and still BD or save up and wait for a positive test? Thanks in advance.