2 days late with period, took pregnancy test turned out negative. no symptoms, 16 years old?

Missed period: If you still don't get your period then I recommend repeating the home pregnancy test in 7 more days. Then follow-up with your physician for further evaluation.

Can be wrong: The urine pregnancy test depends on the quantity of chemicals released by the new conception/embryo into the body that make it to the urine.An early morning specimen is more concentrated & more likely to be accurate, but it can take a while to test positive. At 16 you may just skip a cycle occasionally.