What Are The Symptoms Of Pregnancy?

Hello I am 6 days late have almost non stop nausea since 2-3 days, tender and painful nipple, weird feeling in stomach. I had no bleeding or spotting and my last period was on December 10 and i was due on January 7. I took pregnancy test but show negative. I pee in a cup and put the stick in it for 3 second as it was ask in the instructions. Could i still be pregnant or is my head is sending wrong informations to my body? I take a pregnancy of the @home brand which is a steam stick.