HPT are not always accurate. your blood work is. Sorry but I think I have to say its negative.
I'm sorry, you could just be stressing it to much, and causing your period to delay. All those symptoms can be related to your period coming. We just don't realize it until were actually trying for a baby, but they are the same. :))
If your blood test was neg...im sorry i would say no...your not pregnant...as soon as your baby starts implantation certain horomones are present...and home tests dont always puck them up because your body may metabolize them in a way they dont filter thru your urine...but it always shows up in blood.