I'm 19. i had sex on 31aug,a ipill within 24 hrs. due date was 21sept. got very light irregular bleeding/spotting on 10sept for 4 days. missed my period date(21sept). took preg test on 24sept, was negative. today 1oct still no period. what to do?

Tests are accurate: Today's home pregnancy tests are very accurate and not affected by foods, herbs, common illnesses, sexually transmitted diseases, or medications. A correctly done urine test will give a reliable result 3 weeks after sex (3 weeks after possible conception) or 1 week after missing a period. If done sooner, a positive result is likely real, but a negative result may be due to testing too soon.