Ovulation Confusion

So I am confused with my ovulation timing. My husband and I have been TTC for 2 cycles (this is our third) and no bfp yet. So this cycle we baby danced every other day during my supposed fertile window according to glow. But I had creamy cm all week. So I was curious and ordered some ovulation tests. I am on cycle day 20, my average cycle is 30 days. And I started testing on cycle day 18 (when I got the tests) in the afternoon each day. I got a negative test/faint test line on day 18 and 19 then today the test line a lot got darker than the 2 days before that. i still have creamy cm. Sorry if that explanation is confusing!! TIA!