Disease analysis: It is usually 18 days after the same sex or 7- 10 days after menstrual delay, so that you can detect whether you are pregnant or not.

This is because it takes 6-8 days for sperm and eggs to form fertilized eggs to implant in endometrium, and then it takes 7- 10 days for hcg secreted by placenta to enter urine. It is scientific to detect pregnancy from urine after 18 days. Pregnancy can be detected as early as seven days after sex, usually about 14 days, and a few can be diagnosed in more than 20 days, which can be confirmed by self-use test paper or hospital hcg examination. Suggestion: