Can I detect pregnancy if my period is four days late? Is there a reason why I didn’t detect it?

　　Can I detect pregnancy if my period is four days late?

　　when female When a friend is pregnant, menstruation will be delayed immediately. However, delayed menstruation is not necessarily caused by pregnancy. To confirm whether you are pregnant, you need to do a test after a few days of delayed menstruation. How many days of delayed menstruation can you detect pregnancy? Pregnancy can sometimes be detected after a female friend's menstruation is delayed for four days.

　　However, in order to get more accurate test results, it is best to use a pregnancy test paper to test after seven days of delayed menstruation. At this time, the chorionic gonadotropin in the blood and urine of female friends will change significantly, so the test results at this time will be more accurate. If it is positive, it mostly means that you are pregnant, and if it is negative, it means that you are not pregnant.

　　Generally, female friends will have some changes in their body or urine after three days of pregnancy. At this time, pregnancy can be tested. If you use early pregnancy test strips to test, it is best to choose to test in the morning, and the first urine test in the morning.

　　If you have been pregnant for a period of time, you can choose any time period to detect whether you are pregnant, because the chorionic gonadotropin in your urine will have changed significantly after a period of pregnancy.

　　What should I do if my period is four days late and the test doesn’t show up?

　　First: Avoid the misunderstandings in using early pregnancy test strips

　　1. HCG usually appears in urine a few days after the fertilized egg implants, and it must reach a certain amount to be detected. Therefore, for women with normal menstruation, HCG can be detected in urine only after their menstruation is delayed. Women with long menstrual cycles or abnormal ovulation can only be detected after 40-44 days of menopause.

　　2.some disease and medications may cause false positive results. Some tumor cells such as Grape Fetal cancer, choriocarcinoma, bronchial cancer and renal cancer can also secrete HCG.

　　3. Do not use expired test strips. Because chemical reagents lose their effectiveness over time, pay attention to the production date when purchasing.

　　4. Do not use test strips that have become damp. If the self-test result is negative and you still haven't had your period after 1 week, you should take another self-test. If it's not positive, it's best to see a doctor.

　　second: Also combine these early pregnancy symptoms

　　1.Cessation of menstruation

　　This is a sign of pregnancy that is easier to notice. Women who are generally of childbearing age and have normal menstrual cycles may be pregnant if they miss their menstrual period after sexual intercourse. So how many days after menstruation is delayed is considered pregnant?

　　2. Breasts feel tingling, swelling and itching

　　Breasts may feel tingling, swelling and itching, which are physiological phenomena in early pregnancy. In addition, there may also be changes such as darker areola color, obvious veins under the breast skin, and obvious protrusion of nipples.

　　3. Often feel nausea and vomiting

　　Almost many pregnant women in early pregnancy experience nausea and vomiting from time to time, especially at the beginning of the day. These symptoms vary from person to person. Some pregnant mothers have mild symptoms, while others are severe. Unless nausea and vomiting are severe enough to require medical attention, these are normal phenomena in early pregnancy.

　　4. Loss of appetite

　　Changes in hormones in the body have a strong impact on the taste and smell of pregnant mothers. As a result, pregnant mothers have a loss of appetite and are prone to nausea and vomiting, especially when they see greasy food.

　　5. Fatigue and sleepiness

　　After pregnancy, many changes will occur in the body, and pregnancy will also cause the body to become tense, so the body is particularly susceptible to fatigue. Frequent nausea and vomiting will consume a pregnant mother's energy, and frequent urination will also make the pregnant mother sleep poorly and feel tired.

　　6. Frequent urination

　　In the third month of pregnancy, because the bladder is increasingly enlarged Uterus Compression makes the bladder capacity smaller, and early pregnancy symptoms often include frequent urination. One of the big reasons others will notice you're pregnant is because you're visiting the bathroom more often.

　　If you are not pregnant, the following possibilities are possible:

　　Generally, it is normal for menstruation to be delayed by four days if pregnancy is not detected, because menstrual delay can be considered normal within a week. Of course, it is also possible that the test was performed too early and the test was not detected. But if it's really not pregnancy, what's the reason?

　　one, Gynecology disease

　　1. Cervical adhesions: There is menstrual blood, but the menstrual blood cannot be discharged normally due to adhesions from the cervix and accumulates in the uterus. The patient will have periodic stomach ache , B-ultrasound examination shows that there are dark areas in the uterine cavity, and it is often necessary to go to Hospital Cervical dilation was performed. If this situation is not improved in time, it can lead to endometriosis.

　　2.premature ovarian failure：It is caused by abnormal ovarian function. Often manifested as delayed menstruation, thin hair, amenorrhea and infertility. Menopausal-like symptoms such as vaginal dryness, dyspareunia, hot flashes and insomnia may occur.

　　3.Polycystic ovary syndrome: In addition to oligomenorrhea, it also has three characteristics: anovulation, obesity, and hirsutism. This disease can not only cause irregular menstruation and infertility, but may also increase the risk of high blood pressure, diabetes, and endometrial cancer.

　　4. Abnormal thyroid function: Thyroid problems seem to be more common in women. Whether it is hyperthyroidism or hypothyroidism, it will affect menstruation. In hyperthyroidism, the number of menstrual periods decreases, the amount of menstrual flow decreases, and the time between menstruation becomes longer. When the thyroid function is low, menstrual bleeding will increase and the bleeding time will be long. However, in patients with long-term illness, menstruation will become less frequent or even absent.

　　2. Qi stagnation and blood stasis: If a woman is usually depressed, it will cause qi stagnation and blood stasis over time. Or women may experience cold evil during menstruation or after giving birth. Cold evil hinders the movement of qi and blood and causes blood stasis. Because blood stasis blocks the cell veins, new blood cannot return to the menstruation, resulting in delayed menstrual bleeding.

　　3. Yin deficiency and internal heat: If a woman has a constitution of yin deficiency, or has lost yin fluid due to long-term illness, excessive childbirth, or excessive sexual intercourse, the yin blood in the body will be depleted. Yin deficiency and internal heat make the blood sea restless, and menstrual blood cannot flow normally, resulting in prolonged menstruation. (Reference website: Mom.com)

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