24/09/2026
In 2021, a woman named Siti Zainah from Cianjur in West Java, Indonesia gained worldwide attention after claiming she became pregnant when a gust of wind entered her body while resting at home, then gave birth to a healthy baby girl minutes after feeling sudden stomach pain.
The story went viral, prompting local authorities and medical workers to investigate. Health experts explained it was almost certainly a cryptic pregnancy, a rare but real condition where a woman does not realise she is pregnant until labour begins.
Officials believed her separated husband was the biological father. Cases like this sometimes emerge in conservative communities due to the social pressure and stigma around pregnancy.
A cryptic pregnancy, also known as a pregnancy denial or stealth pregnancy, is a real pregnancy that remains unrecognized until very late in pregnancy or, in rare cases, until labor begins. Although uncommon, it is a well documented medical phenomenon. The person is genuinely pregnant but does not realize it for weeks or even months.
There are several reasons why this can happen. Some people continue to experience light or irregular bleeding that they mistake for their menstrual periods. Others have very mild or no typical pregnancy symptoms, such as nausea, breast tenderness, or fatigue. In some cases, the abdomen does not enlarge significantly because of body habitus, strong abdominal muscles, or the position of the fetus. People with irregular menstrual cycles may also be less likely to notice a missed period.
Home pregnancy tests are generally very accurate when used correctly, but false negative results can occur if the test is taken too early, the urine is too diluted, or the instructions are not followed properly. In rare situations, unusual hormone levels can also contribute to a negative test despite an ongoing pregnancy. Blood tests and ultrasound are more reliable when pregnancy is suspected.
Cryptic pregnancy is uncommon. Research suggests that about 1 in 400 to 500 pregnancies remain unrecognized until around the halfway point of pregnancy. Cases in which the pregnancy is not discovered until labor begins are much rarer, occurring in approximately 1 in 2,500 pregnancies.
Because the pregnancy may go unnoticed, prenatal care is often delayed or completely absent. This can increase the risk of complications such as high blood pressure during pregnancy, gestational diabetes, poor fetal growth, preterm birth, and an unexpected delivery without medical assistance.
Anyone who thinks they might be pregnant despite a negative home test or unusual symptoms should seek medical evaluation. A healthcare professional can perform a blood pregnancy test and an ultrasound to confirm or rule out pregnancy. It is also important to remember that a cryptic pregnancy is different from a false pregnancy, known as pseudocyesis. In a cryptic pregnancy, there is a real fetus, whereas in pseudocyesis, the person experiences symptoms or believes they are pregnant despite there being no actual pregnancy.
