Most of the first urine in the morning is after a night’s sleep, after 8 hours, this kind of urine is more concentrated, so it contains a higher hormone content. If you want to find out if you are pregnant, this kind of urine has a much higher hormone content than daytime urine. If you want to know whether you are pregnant or not 10 days after intercourse, you may not be able to detect it with your regular urine because the hormone level is lower in the body, but you will be able to detect it with the morning urine because it is more concentrated, which will prevent false negatives. If the pregnancy test does not show that you are pregnant, you can retest in 2-3 days.