Could this be a very early sign of pregnancy?

so, a little background to the question. I had unprotected sex on 10/20 my period started on the 5th or 6th (I can't remember.) so that would put my high chance days during that week I had sex. My period should arrive around 11/10 I took a pregnancy test today 10/28(I know a bit early) and it came out negative. I have felt nauseous, fatigue, breast pain, and had pelvic pain that week. Still feeling nauseous randomly and breast are still sore. BUT my question is I have fluid coming out of my left nipple. It only comes out when I squeeze it. The color is like skim milk color kinda yellow-ish. I am going to the doctor's Wednesday, but hoping maybe someone else had this problem?