You can find out you are pregnant only if they order a pregnancy test. Most MDs will order routine urine tests. These do not tell you if you are pregnant. They only tell you if you have red blood cells, blood cell, bacteria in your urine.
yes you can if they test for it but they have to know to test it, they usually do on all women. I was pregnant and went to ER for pregnancy related stuff and they did a pregnancy test and told me I was pregnant NO SHIT IDIOTS