S.K.
I have had two negative test results that turned out to be pregnancies, but they were the at home kind and not done at the hospital. I would give it another week - I know that it is hard to wait and not know - and take one more. Don't feel like you have to buy the pricy ones to get a good result. My inacurate tests were EPT and First Response and the generic kinds have always been right on.
Best of luck,
S.