Around 25% of pregnancies fail before the woman recognizes any symptoms. In other words, she miscarries the pregnancy before confirmation. These are called a chemical pregnancy. The exact cause of biochemical pregnancy is not yet known.
Chemical pregnancies are usually diagnosed when β-hCG levels are tested prior to a missed menstrual period. The rise in β-hCG in the case of biochemical pregnancy is for a short time. This differs from a healthy pregnancy test after IVF. It is an adverse outcome of a clinical pregnancy like spontaneous and induced miscarriages, ectopic pregnancy, etc. Chemical pregnancy can’t be detected in ultrasound. The rise in β-hCG is for a short time, it doesn’t double like clinical pregnancy. Rapid fall in urinary or serum β-hCG concentration and subsequent regular menstrual period indicates a chemical pregnancy.
A biochemical pregnancy causes disappointment to the couple after IVF treatment. However, you can take for sure that the embryo had implanted after hatching. Due to several reasons, the embryo may not grow further. But this shouldn’t withdraw you from further treatment. Instead, you can take it a hope of a successful clinical pregnancy in the future.
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