Many times, women test positive on a pregnancy test only to get a negative result a few weeks later. If this also happens to you, it can be an indication of a chemical pregnancy, which is a very common type of very early pregnancy loss. Sometimes, this early loss often goes unnoticed, as it ends before it can be seen in an ultrasound and be mistaken for a normal menstrual period.
If you are in Singapore or trying to become a parent, Cryoviva Singapore encourages you to stay informed about such situations. Because awareness about chemical pregnancy will help you navigate your pregnancy journey with clarity and confidence.

Updated At: 09 October 2026
A chemical pregnancy (or biochemical pregnancy) is a very early miscarriage that occurs within the first 5 weeks of pregnancy, before the pregnancy can even be seen on an ultrasound.
An embryo forms and implants in the uterine lining; however, it then stops developing. This leads to very early miscarriage. Sometimes, many women don’t realize they’ve miscarried.
Biochemical pregnancies make up anywhere from 50 to 75% of all miscarriages; however, it is not an indication that you can’t get pregnant.
According to research published in the New England Journal of Medicine, chemical pregnancies may account for the majority of all early pregnancy losses, with studies estimating a range of 50;75%.
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There is nothing to worry about, because it is a very common type of pregnancy and does not require any treatment. Most women achieve healthy pregnancies after a chemical pregnancy.
Also Read:What Is a Cryptic Pregnancy? Causes, Signs & Risk
The biochemical pregnancy will only be confirmed by your healthcare professional in Singapore. Here are some possible signs and symptoms that can indicate its possibility.
Home pregnancy test kits detect low human chorionic gonadotropin (hCG) from early implantation; however, levels drop quickly when the embryo stops developing. That’s why the test may show positive in the beginning but negative as HCG levels fall. You might not notice the usual signs of early pregnancy.
Light bleeding happens as the uterine lining sheds after the embryo fails to grow, similar to implantation bleeding. Then the bleeding can get heavier, similar to dark red and jelly-like.
Extra tissue from a biochemical pregnancy or brief implantation causes more flow or delays the cycle by a week because of disrupted hormone signals.
The uterus contracts to remove the remnants, triggered by hormonal shifts like dropping progesterone. This can feel like intensified menstrual pain.
The early pregnancy signs, such as sore breasts or tiredness, come and go fast as the hCG drops when the embryo stops growing.
It is unclear exactly why an embryo stops developing during a chemical pregnancy. Some of the possible explanations can be:
Your doctor may confirm it through:
While it cannot be fully prevented, you can take the following measures:
If you're preparing for your next pregnancy, its also worth learning about cord blood banking and how it can be part of your familys future health planning. Book a free consultationwith Cryoviva Singapore to learn more.
A: Yes, a chemical pregnancy is a type of very early miscarriage that occurs before the pregnancy is visible on ultrasound, usually within the first 5 weeks.
A: Yes, most women go on to have a healthy pregnancy after a chemical pregnancy. It does not affect future fertility in most cases.
A: No, a chemical pregnancy usually does not require medical treatment and resolves on its own like a normal period.
A chemical pregnancy involves a positive pregnancy test and detectable hCG followed by a negative result, while a normal missed period does not involve a confirmed positive pregnancy test.
A: Most doctors recommend waiting for one normal menstrual cycle before trying again, though there is no strict medical requirement to wait.