Pregnant Or Not?????

Im Asking Cause Im In A Muddle....When I Have My Persiod Its Normally around The Same Time...Well Last Month I Had It On The 7th And It Was Short...I Took A Doctor Blood Test And Was Not Pregantn..This Month I Get A Sick Feeling In My Stomach, Dizziness,Headache, Not Wanting Food, And Even Making Ciggerttes Taste Not As Great.. Not To Mention I Have Not Had A Period Yet.. All Im Getting Is A Watery Discharge And Stomach Pains, There Not Painful But Really Uncomftorable...Should I Wait The Month Out?