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.