There are many reasons why the color of the pregnancy test is getting lighter and lighter, which may be caused by poor embryonic development, decreasing levels of human chorionic gonadotropin (HCG), ectopic pregnancy, biochemical pregnancy, and so on.
1. Embryonic dysplasia: The pregnancy test is used to initially determine whether a woman is pregnant by detecting HCG in her urine. In the early stages of pregnancy, if the embryo develops normally, the HCG level in the body should be on the rise. If the color of the pregnancy test becomes lighter and lighter, it may indicate a decrease in HCG secretion, suggesting that the embryo is not well developed.
2. HCG is in decline: after pregnancy, HCG level in women’s body reaches the highest value in 8-10 weeks of pregnancy, after that the level of the hormone will gradually decline. If you test urine HCG during the period of declining HCG, the pregnancy test stick may become lighter and lighter.
3. Ectopic pregnancy: In ectopic pregnancy, the rise of HCG in women’s body is not as obvious as that of women with normal pregnancy, and there will even be a decline in HCG, such as ectopic embryo miscarriage, ectopic embryo developmental anomalies, etc., which will lead to lighter and lighter color of the pregnancy test stick.
4. Biochemical pregnancy: If biochemical pregnancy, HCG in women’s body will appear transient increase, and then gradually decrease, may appear pregnancy test stick is getting lighter and lighter.
Pregnancy test is only a preliminary method to determine the pregnancy status of women, can not be used as a final diagnosis. Women with the above conditions are advised to consult a doctor in time, complete the gynecological ultrasound, blood HCG and other tests, under the guidance of a professional doctor for a clear diagnosis and targeted treatment.