6 days late - negative test

Today I would be 6 days late for my period . I tested on Jan 20 and got a BFN. That week I had been experiencing frequent urination and felt very nauseous which is what caused me to test.

The week that my period was due I experienced cramping like my period would come but never did. I have also been feeling very “wet “ down there. The cramps went away yesterday and I didn’t spot or bleed

Today I am six days late and I got very nauseous after brushing my teeth and have felt very nauseous all day. My breast feel sore and heavy. I am also salivating a lot .

Can these be symptoms of me being pregnant or could it be something else ?