If u take a urine test in the hospital,i had back pain and throwing up would they tell u that ur pregnant because my doctor said its a kidneyinfection?

Yes, if tested.: If they checked for pregnancy with the urine test, yes. Pregnant women can also have kidney infections. It would be good to check if you think you may be pregnant, since pregnant woman are more susceptible and it is more dangerous for them.

Maybe..: A urine test would be able to tell if you are pregnant but it has to be a special kind of test. The urine test that picked up your infection is not the same one that determines if you are pregnant. They may have done one for you already however. You should speak to your doctor. Be well!