If i am using a pregnancy test 24 days from intercourse, can i test anytime of the day?

Sure, but...: Is the test for pregnancy from sex weeks ago? A urine pregnancy test gives a reliable result 3 weeks after sex (3 weeks after when conception might have occurred) 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, and thus lead to a repeat test. If a woman gets her normal regular period, then she is not pregnant.