Contradicting symptoms vs testing

I am completely confused. This is my first cycle on Letrozole (5mg day 3-7)

Currently CD20. I have a very irregular periods.

For the last two days ovulation tests have come back negative but getting closer… today completely void of The second line at all. But for the last two days I have had a very heavy abdominal feeling, what I originally thought Felt like a lower cervix even to the point of painful intercourse? **checked my own cervix, all very soft** Sore breasts, and very stretchy cervical mucus today!

Any idea?