While some people wonder if chills indicate pregnancy, they are not a common or definitive early sign. Many other factors can cause chills.
Chills in Early Pregnancy
Early in pregnancy, some individuals might experience chills due to physiological adjustments. Hormonal changes, particularly rising progesterone levels, can affect the body’s thermoregulation. This may lead to a sensation of feeling colder than usual or cause temperature fluctuations.
Increased blood volume is another factor influencing temperature regulation. While pregnancy increases blood flow to vital organs, it might temporarily reduce circulation to the extremities, causing cold hands and feet. The body’s metabolic rate also increases to support the developing baby, contributing to temperature fluctuations. However, chills are not a universal or primary symptom for many.
Common Causes of Chills
Chills are a general symptom resulting from various non-pregnancy-related conditions. Infections, such as colds, flu, or other viral and bacterial illnesses, are common causes. When fighting infection, the immune system signals the brain to raise core body temperature, leading to fever and chills as the body shivers to generate heat.
Beyond infections, other factors can also trigger chills. Low blood sugar, known as hypoglycemia, can cause symptoms like shaking, weakness, sweating, and chills. Dehydration can also lead to chills, as the body struggles to regulate its internal temperature when fluid levels are too low. Environmental factors, such as exposure to cold temperatures, will also naturally cause the body to shiver to produce heat.
Other Indicators of Early Pregnancy
Many more common and reliable indicators can suggest early pregnancy. A missed menstrual period is often the first and most noticeable sign, especially for individuals with regular cycles. Hormonal changes in early pregnancy can also lead to breast tenderness, soreness, or swelling, similar to premenstrual symptoms but often more pronounced.
Nausea, commonly known as morning sickness, is a frequent symptom that can begin early in pregnancy, though it can occur at any time of day. Increased urination is also common due to increased blood volume and the kidneys processing more fluid. Fatigue is a widespread early symptom, potentially linked to rising progesterone levels. Other signs might include mood swings, bloating, mild cramping, and changes in food preferences or sensitivity to smells.
Next Steps and When to Seek Advice
If you suspect pregnancy, taking a home pregnancy test is often the most practical next step. Most home pregnancy tests are designed to detect the pregnancy hormone human chorionic gonadotropin (hCG) and can be used accurately from the first day of a missed period. For optimal accuracy, it is often recommended to wait at least one to two weeks after a missed period before testing.
While occasional chills may not be concerning, it is advisable to consult a healthcare provider if chills are severe, persistent, or accompanied by other worrying symptoms. These symptoms could include a high fever, significant pain, shortness of breath, a stiff neck, or confusion. Additionally, if you have a positive pregnancy test result, or if you continue to experience symptoms suggestive of pregnancy despite a negative test, a healthcare professional can provide confirmation and appropriate guidance.