Pregnancy can be detected by a blood test after a week of delayed menstruation. If you use a test strip or pregnancy test, you have to wait until your period has been delayed for about ten days.
Women ovulation after intercourse sperm and egg combination, the formation of fertilized eggs and bed, the body of the human chorionic gonadotropin will rise, generally one week after intercourse can be through the blood test human chorionic gonadotropin to determine whether the pregnancy, and do not need to wait until the menstrual period is delayed.
If your period is delayed for a week, you can take a blood test in time to determine whether you are pregnant, which is more accurate.
The human chorionic gonadotropin in urine rises slowly, so if you use pregnancy test paper or pregnancy test stick to test the human chorionic gonadotropin in urine to determine pregnancy, you have to wait until your period is delayed for ten days to detect pregnancy.
If there is a delay in menstruation after intercourse, you can combine the test paper with a urine test or blood test to determine pregnancy, which is more accurate.