Hi belly, I really don't think a tubal pregnancy would show up on a pregnancy test as the placenta among other things would not be developing properly, therefore you are probably not producing the hcg hormone or enough of it to show on a test. Are you in any pain ? There is pain with a tubal pregnancy. The fact that you are having the urge to push and blood appears when you do, I really feel you should see a doctor immediately, or go to the hospital.
Best of luck, I hope everything goes well.
Suzy