Help! :)

Over the past 10 days or so I've been having some (what I believe to be) pregnancy symptoms. Nausea, Food aversions, heartburn, crazy acne, Metallic taste in mouth, increased appetite, fatigue, white milky discharge ... Just to name some. This waiting is the worst!!!! I am expected to start my period 02/18. I took a pregnancy test last night and it was negative. When should I test again? Are these symptoms you all have had and ended up pregnant?