You can use a pregnancy test strip a few days after having sex.

When couples are in the stage of preparing for pregnancy, they often test whether they are pregnant after having sex. In fact, it is not possible to test whether you are pregnant immediately after having sex. It takes a long time, at least a long time, for the sperm and egg to combine and enter the uterus, and then use a pregnancy test strip to test. Only in this way can it be tested. Don't blindly test whether you are pregnant.

How long does it take for a pregnancy test to show results?

If your period does not come as expected and you have had unprotected sex before, you can diagnose it with a pregnancy test. Generally, the HCG value is not obvious if it is too early. It is more effective to measure it by this method between 10 and 14 days. If you are still worried, you can diagnose pregnancy through B-ultrasound examination. What many women are most concerned about is how long it will take for a pregnancy test to show results? In fact, the test can be done on the day of missed menstruation, or 7-10 days after intercourse. Collect urine, insert the test strip, and observe the results within 5 minutes. The whole testing process is convenient, fast and accurate. If the test result is positive, colored bands will appear on both the top and bottom of the test strip, indicating pregnancy. If the result is negative, only a purple-red band will appear on the upper end of the test strip and no band will appear on the lower end, indicating that you are not pregnant.

Generally, the fertilized egg implants in the endometrium one week after sexual intercourse, so human chorionic gonadotropin will appear in the urine a few days after pregnancy. However, due to the small amount, it is difficult to test it at the beginning, and it becomes increasingly obvious after 10 to 14 days. If you want to medically confirm whether you are pregnant as early as possible, you can go to the hospital's gynecology department about 3 weeks after sexual intercourse to monitor and confirm the diagnosis with blood HCG, which is more accurate.

In addition, most women do not experience early pregnancy reactions such as nausea and vomiting, fatigue, drowsiness, loss of appetite, food selectivity, and frequent urination until about 6 weeks after menstruation. Therefore, if there is an error in the pregnancy test strip in the early stages of pregnancy, it will be difficult for women to tell whether they are pregnant based on their own physical performance.

How accurate is the pregnancy test strip?

Some women of childbearing age are worried that pregnancy test strips cannot accurately detect whether they are pregnant. So are pregnancy test strips accurate? How accurate are pregnancy test strips? Generally speaking, if you do a pregnancy self-test at home without any outside guidance, the test results will only be 50% to 90% accurate. If the pregnancy test is done under the guidance of a doctor and the woman can use the test strip correctly according to the instructions, the test accuracy may be close to 100%.

Why is there such a big difference in detection accuracy? When women do self-pregnancy tests at home without any outside guidance, the test results generally have a certain degree of uncertainty. If this test is done in a laboratory in the presence of a doctor, the doctor can ensure that the test strip is working properly and the woman can use the test strip correctly according to the instructions, so the accuracy rate will naturally be higher. And there are other obstacles to obtaining accurate test results. Although most pregnancy test strips indicate that women can do a pregnancy self-test one day after missing their normal menstrual period, in fact, this varies from person to person. Therefore, it is best for women to do a pregnancy self-test two weeks after their menstrual period is late, so that the test results will be more accurate.