I am having all the symptoms of being pregnant i missed my period by 3 days the last time i had sex was the 11th of september i keep taking home pregnancy test all negative?

Can retest in 1 week: 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 (3 weeks after when conception might have occurred), or 1 week after missing a period. An Ob-Gyn doctor can evaluate any persistent or worrisome symptoms.