I dont want to get pregnant but i keep searching the net for symptoms of pregnancy and im gradually having them bit by bit. why is this so?

Observer Bias: 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 by 3 weeks after sex (3 weeks after when conception might have occurred), 1 week after starting a "weird" period, or 1 week after missing a period.