 [ Symptoms ] i am going on 3 wks late on my period taken 3 otc pregnancy tests could i still be preg or what else could be cause  should i get in to see my gyn the 3 preg tests were taken a week apart but still not pregnant [ Disease ] i never had a positive urine test with my son and i was pregnant i would go to your doctor or a clinic and have a blood based pregnancy test for more accurate results it may i can not remember take longer for the blood based tests to work   for more time to have passed than 3 weeks but bottom line i would not rely on the urine tests and you may want to consider that you may be pregnant when making decisions e g drinking smoking taking medications until you have gone to the doctor