What is this white discharge I have? Is this white blood? Had unprotected sex last thursday. Am I pregnant?

Maybe. Maybe not. It can be hard to tell if a woman is pregnant because some of the symptoms seen in early pregnancy can also happen in non-pregnant women. A urine pregnancy test gives a reliable result if done correctly. One can test about 3 weeks after sex (when conception might have occurred), or 1 week after missing a period. An ob-gyn doctor can check on persistent or worrisome symptoms, or check for std's.