Why can't I detect pregnancy after 40 days?

The test can be done 10-10 days after sexual intercourse. Naturally, the longer the time, the more accurate it will be. The principle of pregnancy test strip pregnancy test is to test the HCG value, that is, the value of human chorionic gonadotropin in the body. This type of hormone is produced by the embryo and usually appears in the urine a few days after pregnancy. However, it is not easy to test it out by urine measurement at the beginning. Let's discuss why pregnancy cannot be detected after 40 days?

HCG can also be measured through blood tests and it must be accurate. Although many pregnancy test strips indicate that women can do self-diagnosis after missing their normal menstrual period for 1 day, in fact, not all pregnant women secrete the same rate and amount of HCG hormone, it varies from person to person. "If you do a urine test too early, the negative result may be incorrect." said an obstetrician and gynecologist. Therefore, it is best to do a pregnancy test half a month after your period is delayed, so that the result will be more reliable.

How to detect pregnancy

It is very important to judge whether you are pregnant in time and accurately. This not only avoids having an abortion immediately when you need to get pregnant, but also helps detect and prevent unexpected situations such as ectopic pregnancy as early as possible.

For women whose menstrual periods have been normal, who have sex and have not taken any contraceptive measures, if their menstrual periods have been delayed for more than ten days, it may indicate pregnancy.

In the early stages of pregnancy, most women also have some obvious pregnancy reactions, such as nausea, retching, fatigue, and a liking for spicy food.

Due to the continuous high-quality secretion of estrogen, the woman's body temperature will be slightly higher than the normal body temperature for a long time, and if it lasts for more than ten days, it can be basically determined that she is pregnant.

Go to the pharmacy to buy a pregnancy test strip. It is best to use morning urine as the sample collection for testing. Once the data shows "captain", there is an 80% or more chance that you are pregnant.

You can go to the hospital to take blood or urine to test HCG. In particular, if HCG can be detected in the urine, it can be basically diagnosed that the pregnancy is successful.