Ladies need your help on Early Pregnancy Please?

[Mary]

Ok. So my periods are really regular every 31 days. I always know when I ovulate because I have the abdominal area pain, and the cm mucus changes to strechy egg white consistency. Confirmed by online ovulation calendars as well. I ovulated on 6/19, I also had the normal ovulation symptoms. Late that night I had sex. Since 2 dpo I have had symptoms like nausea, headaches, breast tenderness and blue veins on my arm chest and a large one that is raised going down to my breast. My period is suppose to be due tomorrow. But I have alot of creamy white lotion like cervical mucus. I had a lab blood test 5 dpo it was negative. I also did two hpts the last one was this last sunday still negative. I never get pms symptoms like this especially very close to ovulation. If anything its some cramping a few days before. But I dont know what to think. Any ideas?