Why don't I have my period when the pregnancy test shows I'm not pregnant?

Many women become very anxious when they find that they have not had their period after having sex with their lovers. However, after using the pregnancy test stick, I found that the final data showed that I was not pregnant. So what is the reason why the pregnancy test stick shows that I am not pregnant but my period does not come?

After fertilization, the egg takes 4-5 days to travel from the fallopian tube to the uterus and stays in the uterus for 3-4 days. This process takes 7 days. Therefore, it can be detected about 7 days after intercourse at the earliest. To diagnose whether you are pregnant, you need to accurately determine whether you are pregnant by testing the HCG value in your body.

The ovulation period is around the 14th day of the menstrual cycle. If fertilization is successful at this time, it will take 6 or 7 days for the combination of sperm and egg to produce HCG. The pregnancy test stick is determined by testing HCG in urine.

There may be deviations when using pregnancy test sticks, but most of them are relatively accurate. You can start by testing when your period is about 5 days late. If two bars appear, it means you are pregnant, and one bar means you are not pregnant. If there is no bar at all, there may be something wrong with the pregnancy test stick or the test standard is incorrect. You can buy another pregnancy test stick and test again.

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

It is best to use the first urine in the morning to test for pregnancy by testing whether there is a certain amount of hCG in the urine to determine whether the pregnancy is present. If the hCG preset value of the pregnancy test stick is reached, two bars will appear on the pregnancy test stick, indicating pregnancy.

A lot of hCG in urine is metabolized after embryo implantation, and generally it takes at least 11 days for embryo implantation to occur. Therefore, it is generally necessary to use a pregnancy test stick to test for pregnancy 11 days after ovulation. Generally speaking, the accuracy of pregnancy testing is higher when the menstrual period is about 10 days late. The method of testing pregnancy with a pregnancy test stick is simple and clear. If no comparison line appears within 5 minutes, it means that the test is invalid or unsuccessful.