Can a beta HCG pregnancy blood test be wrong?
with blood the levels start changing almost right away so if it is less than 1% after 2 weeks then there is no chance you got pregnant after that time having unprotected sex, i would wait until your period is due and then test again, but even then if you did get pregnant that month it would have shown up on the bloods with even a slight increase, you can always take it again but i would say that your not pregnant sorry but good luck
