Ovualtion advice please


So i have been doing ovualtion test but have not recieved a positive and im getting quite late in my cycle. (I have 28 day cycles). So i haven't had any positives but my body is telling me different.

I had abdominal cramping yesterday, my boobs have swollen, and cm changed to more watery. So should i go by the test or by my body changes.

Its my first cycle of clomid too.